CN110216298B - A multifunctional electric knife holder - Google Patents
A multifunctional electric knife holder Download PDFInfo
- Publication number
- CN110216298B CN110216298B CN201910517453.4A CN201910517453A CN110216298B CN 110216298 B CN110216298 B CN 110216298B CN 201910517453 A CN201910517453 A CN 201910517453A CN 110216298 B CN110216298 B CN 110216298B
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- tool
- disc
- temperature sensor
- aluminum cover
- cutter body
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 64
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 64
- 238000007514 turning Methods 0.000 claims abstract description 46
- 230000001133 acceleration Effects 0.000 claims abstract description 38
- 230000011664 signaling Effects 0.000 claims abstract description 27
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000013459 approach Methods 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 239000000428 dust Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000008093 supporting effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 9
- 230000000007 visual effect Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000003754 machining Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/002—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring the holding action of work or tool holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Harvester Elements (AREA)
Abstract
The invention discloses a multifunctional electric tool rest, which relates to an electric tool rest used on a lathe, and can realize automatic tool changing and tool state monitoring and control the operation of the lathe according to the tool state feedback. The automatic cutting tool comprises a tool rest body, a machine clamp turning tool, a signal acquisition cover and a controller, wherein the controller is arranged independently, the tool rest body comprises a motor, a coupler, a lower tool body, a central shaft, an upper tool body, a worm, a bearing, a worm wheel, a screw, a lower clutch disc, a clutch pin, an upper clutch disc, a thrust ball bearing, a retaining ring, a signaling disc and a cover seat, the machine clamp turning tool comprises a tool body, a fixed block, a blade and a gasket-shaped temperature sensor, the signal acquisition cover is assembled on the tool rest body and is used for acquiring temperature and vibration information of the machine clamp turning tool blade, and the signal acquisition cover comprises an electromagnetic shielding layer, a wireless charging transmitting module, a wireless charging receiving module, an inner aluminum cover, an outer aluminum cover, a fixed bracket, an acceleration sensor, a wireless sensor and an infrared temperature sensor.
Description
Technical Field
The invention discloses a multifunctional electric tool rest, which relates to an electric tool rest used on a lathe, and can realize automatic tool changing and tool state monitoring and control the operation of the lathe according to the tool state feedback.
Background
The electric tool rest is an important functional part of the numerical control lathe, and the performance of the electric tool rest directly influences the cutting machining performance and the operation reliability of the lathe. The current worm gear and worm drive, the electric tool rest of fluted disc meshing structure has advantages such as transposition is fast, stable performance, positioning accuracy height. However, most of the electric tool rest has single functions, and the state sensing and monitoring of the tool in the machining process cannot be effectively performed.
Disclosure of Invention
The invention aims to overcome the defects of a common electric tool rest, and provides a multifunctional electric tool rest, wherein the temperature and vibration information of a tool are acquired in real time through an acceleration sensor and a temperature sensor, and the operation of a machine tool is controlled through an electric tool rest controller, so that the machining precision of parts can be improved, the service life of the tool is prolonged, possible production accidents are avoided, and the cutting process of the machine tool is more intelligent and controllable.
The invention is realized by adopting the following technical scheme:
The multifunctional electric tool rest comprises a tool rest body, a machine clamp turning tool, a signal acquisition cover and a controller, wherein the controller is independently arranged and adopts a PLC (programmable logic controller);
The tool rest body adopts a worm gear transmission, a clutch pin and a clutch disc guide, and end face teeth of the upper tool body and the lower tool body are meshed with each other to be positioned and locked;
the tool rest body comprises a machine, a coupling, a lower tool body, a central shaft, an upper tool body, a worm, a bearing, a worm wheel, a screw, a lower clutch disc, a clutch pin, an upper clutch disc, a thrust ball bearing, a retaining ring, a signaling disc and a cover seat;
the coupler is of a clamping sleeve type structure and is used for connecting the motor rotor and the worm;
the two bearings are respectively assembled in the lower cutter body and positioned at two ends of the worm;
the lower cutter body is of a cuboid structure, and the upper surface of the lower cutter body is provided with end face teeth;
The lower cutter body is provided with a lower cutter body, a middle shaft is fixed on the lower cutter body, the upper part of the middle shaft is a hollow circular tube, the top of the circular tube is provided with external threads, the lower part of the middle shaft is provided with a disc, a positioning step is arranged on the disc and used for assembling and positioning the lower cutter body, a worm wheel, a screw rod, an upper clutch disc, a thrust ball bearing, a stop ring and a signaling disc are coaxially arranged on the middle shaft, the worm wheel is concentrically arranged on the upper surface of the disc at the lower part of the middle shaft, the screw rod is matched with the worm wheel through a key slot, the upper clutch disc is matched with the screw rod through two positioning pins, when the motor drives the screw rod to rotate, the worm wheel, the screw rod and the upper clutch disc keep synchronous rotation, and the thrust ball bearing, the stop ring and the signaling disc are sequentially arranged above the upper clutch disc and fastened through nuts.
The upper cutter body is of a cuboid structure, an inward concave platform is arranged along the four walls of the outer side and used for placing a machine clamp turning tool, a screw is used for fastening the machine clamp turning tool in the inward concave platform through the upper surface of the upper cutter body, a through hole with an inner thread is formed in the middle of the upper cutter body and matched with an outer thread on a screw rod, and end face teeth are arranged on the lower surface of the upper cutter body and meshed with the end face teeth on the upper surface of the lower cutter body.
The upper clutch disc is fixed at the upper end of the screw rod through two locating pins, the upper clutch disc rotates synchronously with the screw rod, the lower surface of the upper clutch disc is provided with a radial groove penetrating through the center of the circle, the section of the groove is in a right-angle trapezoid shape, and the top ends of the two clutch pins are respectively limited in the grooves at two sides of the center of the upper clutch disc.
The upper surface of the lower clutch disc is provided with four radial grooves which are separated by 90 degrees on the circumference, the cross section of each groove is in a right-angle trapezoid shape, and two angles at the bottom of each groove are respectively 90 degrees and 145 degrees in the clockwise direction, so that a right-angle slope and a slope are formed;
the upper end of the clutch pin is arranged in a groove on the lower surface of the upper clutch disc, and the lower end of the clutch pin is in direct contact with the upper surface of the lower clutch disc.
The clutch pin is an elastic telescopic supporting mechanism and comprises an upper cap body, a lower cap body and a spring, wherein the upper cap body and the lower cap body are cylindrical cap bodies, the longitudinal section of the top of each cap body is in a right-angle trapezoid shape and is respectively matched with right-angle trapezoid-shaped grooves on an upper clutch disc and a lower clutch disc, the spring is assembled between the two cap bodies, a convex supporting rod is arranged in the middle of the lower cap body, the two clutch pins are respectively assembled in two through holes in the lower cutter body, the supporting rod on the lower cap body plays a role in supporting the weight of the lower cutter body and positioning and guiding, the upper end of the clutch pin is limited in the grooves on the lower surface of the upper clutch disc due to the supporting effect of the spring, and the lower end of the clutch pin is in direct contact with the upper surface of the lower clutch disc.
The thrust ball bearing is arranged on the upper surface of the upper clutch disc on the middle shaft.
The retaining ring is arranged on the upper surface of the thrust ball bearing, is fixed and positioned through a wedge key arranged in a key slot of the central shaft, and is fastened through a retaining ring fastening nut, and the retaining ring is used for limiting the upward movement position of the upper clutch disc.
The signal disc positioning gear ring is arranged on the center shaft and is positioned above the retaining ring fastening nut, and positioning is performed through a positioning key on the inner side of the signal disc positioning gear ring and a positioning key groove of the center shaft.
The transmitting disc is positioned by the inner teeth and the outer teeth of the transmitting disc positioning gear ring, and four Hall sensors are uniformly distributed in the circumferential direction of the transmitting disc and correspond to the four cutter positions respectively.
Further, a central shaft wiring hole is arranged at the upper end of the central shaft and is used for wiring a power supply line and a signal line of the Hall sensor on the signaling disc.
Further, the signaling disc fastening nut fixes the signaling disc on the center shaft.
The cover seat is fixed on the top end of the upper cutter body through screws, a magnet is arranged in a groove in the cover seat, when the upper cutter body rotates, the magnet can approach each Hall sensor on the signaling disc, and the Hall sensors send signals, so that the position of the cutter rest is obtained.
The machine clamp lathe tool comprises a cutter body, a fixed block, a cutter blade and a gasket-shaped temperature sensor, wherein the cutter blade and the gasket-shaped temperature sensor are respectively provided with an assembly hole with the same diameter, the upper part of the cutter body is provided with the fixed block, one end of the fixed block is fixed with the cutter body through a screw, the screw sequentially penetrates through a positioning hole at the other end of the fixed block, the gasket-shaped temperature sensor and the assembly holes on the cutter blade to fasten the cutter blade and the gasket-shaped temperature sensor on the cutter body, the cutter body is provided with a first through hole from the front side center position to the rear end surface of the cutter body, the middle part of the upper surface of the cutter body is provided with a second through hole, the second through hole is vertically connected with the first through hole and used for wiring of the gasket-shaped temperature sensor, and the machine clamp lathe tool is clamped on an upper cutter body concave platform of the cutter frame body through the screw.
Furthermore, the tool rest body can clamp 4 machine clamp turning tools simultaneously.
The signal acquisition cover is assembled on the tool rest body and is used for acquiring temperature and vibration information of the machine clamp turning tool blade, and the signal acquisition cover comprises an electromagnetic shielding layer, a wireless charging transmitting module, a wireless charging receiving module, an inner aluminum cover, an outer aluminum cover, a fixed support, an acceleration sensor, a wireless sensor, an infrared temperature sensor and the like.
The inner aluminum cover is hollow, the inner aluminum cover is provided with three layers of drawers, namely an upper drawer, a middle drawer and a lower drawer from top to bottom, the upper drawer is provided with a wireless sensor which sends summarized temperature and acceleration information to a controller which is independently arranged in a wireless mode, the middle drawer is provided with an acceleration sensor which collects cutter body vibration information (transmitted by an upper cutter body), the lower drawer is provided with a wireless charging receiving module which converts magnetic energy into electric energy, and a direct-current power supply is provided for the acceleration sensor, the wireless sensor, an infrared temperature sensor and the temperature sensor on a mechanically clamped turning tool.
The wireless charging receiving module is provided with a wireless charging transmitting module (for converting electric energy into magnetic energy) and an electromagnetic shielding layer which are in threaded connection with the center shaft of the tool rest body, a power supply of the wireless charging transmitting module is connected through a through hole of the center shaft, and the electromagnetic shielding layer is used for isolating a magnetic field of the wireless charging module, so that the work of a Hall sensor in a signaling disc below is not interfered. The electromagnetic shielding layer is arranged on a boss at the upper end of the center shaft, and the wireless charging transmitting module is matched and fixed with an external thread at the top end of the center shaft through an internal thread.
Furthermore, the electromagnetic shielding layer is kept at a distance of 1mm from the upper end of the magnetic seat of the tool rest body, so that friction is prevented from being generated when the tool rest rotates.
The end face diameter of the outer aluminum cover is larger than that of the inner aluminum cover, the outer aluminum cover is sleeved on the inner aluminum cover, a fixing support is arranged above the outer aluminum cover and is I-shaped, two ends of the fixing support are parallel transverse supports, two ends of the vertical support are respectively connected with the transverse supports through screws, two screw holes are formed in the middle of the vertical support, the fixing support is arranged on the upper portion of the outer aluminum cover through screws, strip holes are formed in the two ends of the transverse support, the fixing support is fixed on the transverse supports through the matching of an upper nut and a lower nut with external threads on an infrared temperature sensor, the outer aluminum cover fixing support also has the function of a wireless sensor antenna in the inner aluminum cover, and the infrared temperature sensor is used for non-contact monitoring of the temperature of a blade on a machine clamp turning tool.
Further, the probe of the infrared temperature sensor is aligned to the blade of the mechanically clamped turning tool by adjusting the angle between the transverse bracket and the longitudinal bracket and adjusting the position of the infrared temperature sensor in the long hole of the transverse bracket.
The four Hall sensors in the upper cutter body signal transmitting disc are connected with the controller in a wired mode and used for sensing the current station of the electric cutter holder, signals of the acceleration sensor, the infrared temperature sensor and the gasket-shaped temperature sensor on the machine clamp turning tool in the signal acquisition cover are transmitted to the wireless sensor in a wired mode, and the wireless sensor transmits the signals to the controller in a wireless mode.
Further, a through hole is formed in the concave platform of the upper cutter body, so that the machine clamp is convenient for wiring of the temperature sensor on the turning tool.
Further, the wireless sensor is fixed in the upper drawer through a screw, the acceleration sensor is fixed in the middle drawer through a screw, and the wireless charging receiving module is fixed in the lower drawer through a screw.
Further, fixing seats are arranged at the bottoms of the outer aluminum cover and the inner aluminum cover of the signal acquisition cover, fixing holes are uniformly formed in the periphery of the fixing seats, and the fixing seats are fixed with an upper cutter body of the cutter rest body after screws penetrate through the fixing holes. The outer aluminum cover has the waterproof and dust-proof effects.
Further, the outer side of the upper end of the inner aluminum cover is provided with symmetrical wiring holes, the outer side of the upper end of the outer aluminum cover is symmetrically provided with a downward bending wiring pipe for fixing an infrared temperature sensor on a bracket, supplying power and signal wiring of a gasket-shaped temperature sensor on a machine clamp turning tool, and a wireless charging receiving module in the inner aluminum cover supplies power to an acceleration sensor, a wireless sensor, the infrared temperature sensor and the gasket-shaped temperature sensor, and data acquired by the acceleration sensor, the infrared temperature sensor and the gasket-shaped temperature sensor are transmitted to a controller through the wireless sensor in the inner aluminum cover. The orifice of the wiring pipe faces downwards, so that the waterproof and dust-proof effects can be better achieved.
Furthermore, the bottoms of the upper drawer, the middle drawer and the lower drawer are hollowed out, so that convenience is provided for wiring, and further, the wireless charging receiving module is arranged on the lower drawer.
The gasket-shaped temperature sensor on the mechanically clamped turning tool replaces a traditional gasket on the mechanically clamped turning tool, so that the temperature of the mechanically clamped turning tool blade can be sensed more accurately, and the monitoring effect is improved.
Further, the motor is a commercial three-phase alternating current asynchronous motor.
The working principle of the electric knife rest is as follows:
The motor drives the upper cutter body to rotate relative to the lower cutter body, drives the machine clamp turning tool to rotate, is provided with the Hall sensor on the signaling disc in the cutter frame body, is provided with the gasket-shaped temperature sensor on the machine clamp turning tool, is provided with the acceleration sensor in the inner aluminum cover, is provided with four infrared temperature sensors on the fixed support, corresponds to the four machine clamp turning tools, can monitor the position, the temperature and the vibration of the machine clamp turning tool in real time, realizes automatic tool changing and cutter state monitoring through the controller, and can control the operation of the lathe according to the cutter state feedback.
When the cutter is replaced, the upper cutter body rotates, the wireless charging transmitting module and the middle shaft are kept fixed, the wireless charging receiving module is fixed in the lower drawer of the inner aluminum cover on the upper cutter body and can rotate along with the upper cutter body, non-contact continuous power supply of each sensor in the rotating part is realized through the wireless charging transmitting module and the receiving module, and the output of each sensor signal in the rotating part is realized through the wireless sensor.
The multifunctional electric tool rest has the advantages that the multifunctional electric tool rest adopts the working principle of worm transmission and fluted disc meshing, is high in positioning accuracy and convenient to mount, is provided with the Hall sensor, the acceleration sensor and the temperature sensor, adopts the PLC as a controller, can observe and control the state information of the electric tool rest tool through the touch screen, has universality and can effectively sense and monitor the state of the machining process. The invention can be modified on the basis of a common four-station electric tool rest, and fully utilizes the original equipment to carry out intelligent upgrading modification. The invention is especially suitable for upgrading and reforming the manual tool rest of the common lathe, can realize the tool changing automation and the early warning and processing of abnormal working conditions of the tool in a relatively economical way, and improves the production efficiency and the intelligent level.
Drawings
FIG. 1 is a schematic view of a tool holder body according to the present invention;
FIG. 2 is a schematic view of the center shaft structure of the tool holder body of the present invention;
FIG. 3 is a sequence diagram of the installation of components mounted on the bottom bracket;
FIG. 4 is an exploded view of the structure of the bottom bracket mounting assembly of the toolholder body in accordance with the invention;
FIG. 5 is an exploded view of the tool holder body structure of the present invention;
FIG. 6 is a schematic diagram of the explosive structure of the signal acquisition cap of the present invention;
FIG. 7 is a schematic diagram of an explosion structure of the mechanically clamped turning tool in the invention;
FIG. 8 is a schematic view of a three-part assembly of the present invention;
FIG. 9 is a schematic diagram of the structure of the present invention;
fig. 10 is a left side view of fig. 9;
FIG. 11 is an electrical schematic of the main circuit of the electric tool post of the present invention;
FIG. 12 is an electrical schematic diagram of the control circuit of the electric tool post of the present invention;
FIG. 13 is a flow chart of the automatic knife selection of the present invention;
FIG. 14 is a flow chart of a jog select routine of the present invention;
FIG. 15 is a sensor monitoring information control flow chart of the present invention;
in the figure:
100. The tool rest comprises a tool rest body, 101, a motor, 102, a sleeve, 103, a lower tool body, 104, a motor mounting seat, 105, an upper tool body, 106, a central shaft, 106-1, a disc, 106-2, a central shaft wiring hole, 107, a gasket, 108, a thrust ball bearing, 109, a retaining ring, 110, a signaling disc positioning gear ring, 111, a signaling disc, 112, a cover seat, 113, a groove, 114, a Hall sensor, 115, a worm, 116, a bearing, 117, a worm wheel, 118, a screw, 119, a lower clutch disc, 120, a clutch pin, 121, an upper clutch disc, 122, a wedge key, 123, a retaining ring fastening nut, 124 and a signaling disc fastening nut;
200. the device comprises a signal acquisition cover, 201, an infrared temperature sensor, 203, bolts, 204, a fixed support, 207, an outer aluminum cover, 208, a wiring pipe, 210, a wireless sensor, 211, an upper drawer, 212, an acceleration sensor, 213, a middle drawer, 215, a wireless charging receiving module, 216, a lower drawer, 217, an inner aluminum cover, 219, a wireless charging transmitting module, 220 and an electromagnetic shielding layer;
300. The machine clamp lathe tool, 301, screw, 302, fixed block, 303, blade, 304, gasket-shaped temperature sensor, 305, cutter body, 306, first through hole, 307, second through hole.
Detailed Description
In the schematic diagram of the explosion structure of the signal acquisition cover of fig. 6, the bracket is exploded upwards, the drawer is exploded rightwards, and the rest is exploded upwards and downwards separately.
In the schematic diagram of the explosion structure of the mechanically clamped turning tool of fig. 7, the temperature sensor with the gasket is moved out, and the screw is moved out.
Referring to fig. 1 to 10, the multifunctional electric tool rest of the invention comprises a tool rest body 100, a machine clamp turning tool 300, a signal acquisition cover 200 and a controller;
The tool rest body 100 comprises a motor 101, a coupler, a lower tool body 103, a center shaft 106, an upper tool body 105, a worm 115, a bearing 116, a worm wheel 117, a screw 118, a lower clutch disc 119, a clutch pin 120, an upper clutch disc 121, a thrust ball bearing 108, a backstop ring 109, a signaling disc 111 and a cover seat 112;
The shaft coupling connects the rotor of the motor 101 with the worm, and two bearings 116 are respectively fitted in the lower cutter body 103 and located at both ends of the worm 115.
The lower cutter body 103 is of a cuboid structure, end face teeth are arranged on the upper surface of the lower cutter body 103, and a center shaft 106 is fixed on the lower cutter body 103. The upper part of the center shaft 106 is a hollow round tube, the top of the round tube is provided with external threads, the lower part of the center shaft 106 is a round disc 106-1, a positioning step is arranged on the round disc 106-1 and used for assembling and positioning with the lower cutter body 103, a worm wheel 117, a screw rod 118, an upper clutch disc 121, a thrust ball bearing 108, a retaining ring 109 and a signaling disc 111 are coaxially arranged on the center shaft 106, the worm wheel 117 is concentrically arranged on the upper surface of the round disc on the lower part of the center shaft 106, the screw rod 118 is matched with the worm wheel 117 through a key slot, the upper clutch disc 121 is matched with the screw rod 118 through two positioning pins, when the motor 101 drives the worm 115 to rotate, the worm wheel 117, the screw rod 118 and the upper clutch disc 121 keep synchronous rotation, the thrust ball bearing 108, the retaining ring 109,123 retaining ring fastening nuts and the signaling disc fastening nuts are sequentially arranged above the upper clutch disc 121.
A central axis wiring hole 106-2 is arranged at the upper end of the central axis 106 and is used for wiring power supply lines and signal lines of the Hall sensor 114 on the signaling disc 111.
The upper cutter body 105 is of a cuboid structure, an inward concave platform is arranged along the four outer walls and used for placing a machine clamp turning tool, a screw is used for fastening the machine clamp turning tool 300 in the inward concave platform through the upper surface of the upper cutter body 105, a through hole with an inner thread is formed in the middle of the upper cutter body 105 and matched with an outer thread on the screw rod 118, and end face teeth are arranged on the lower surface of the upper cutter body 105 and meshed with the end face teeth on the upper surface of the lower cutter body 103.
The middle of the upper clutch disc 121 is provided with an upper clutch disc through hole, the diameter of the upper clutch disc through hole is larger than the diameter of the middle shaft 106, the upper clutch disc 121 is fixed at the upper end of the screw 118 through a locating pin, the upper clutch disc 121 and the screw 118 synchronously rotate, the lower surface of the upper clutch disc 121 is provided with a radial groove penetrating through the center of a circle, the cross section of the groove is in a right-angle trapezoid shape, and the top ends of the two clutch pins are respectively limited in the grooves at two sides of the center of the upper clutch disc 121.
The lower clutch disc 119 is sleeved on the screw rod 118 and fixed on the lower cutter body 103 by screws, the upper surface of the lower clutch disc 119 is provided with four radial grooves which are spaced by 90 degrees on the circumference, the cross sections of the grooves are in a right-angle trapezoid shape, and two angles at the bottom of the grooves are respectively 90 degrees and 145 degrees along the clockwise direction, namely a right-angle slope and a slope are formed;
The clutch pin 120 is an elastic telescopic supporting mechanism and consists of an upper cap body, a lower cap body and a spring, wherein the upper cap body and the lower cap body are cylindrical cap bodies, the longitudinal section of the top of each cap body is in a right trapezoid shape and is respectively matched with right trapezoid-shaped grooves on the upper clutch disc and the lower clutch disc, the spring is assembled between the two cap bodies, a convex supporting rod is arranged in the middle of the lower cap body, the two clutch pins are respectively assembled in two through holes in the lower cutter body, the supporting rod on the lower cap body plays a role in supporting the weight of the lower cutter body and positioning and guiding, the upper end of the clutch pin 120 is limited in the grooves on the lower surface of the upper clutch disc 121 due to the supporting effect of the spring, and the lower end of the clutch pin 120 is in direct contact with the upper surface of the lower clutch disc 119.
The thrust ball bearing 108 is mounted on the bottom bracket 106 on the upper surface of the upper clutch plate 121.
The retaining ring 109 is mounted on the upper surface of the thrust ball bearing 108, and is fixed and positioned by a wedge key 122 placed in a key groove of the center shaft 106, the upper side of the retaining ring 109 is fastened by a retaining ring fastening nut 123, and the retaining ring 109 is used for limiting the upward movement position of the upper clutch disc 121.
The signaling disc positioning gear ring 110 is mounted on the center shaft 106 and is positioned above the retaining ring fastening nut 123, and positioning is performed through positioning keys on the inner side of the signaling disc positioning gear ring 110 and positioning key grooves of the center shaft 106.
The signal disk 111 is positioned by the inner teeth and the outer teeth of the signal disk positioning gear ring 110, four hall sensors 114 are uniformly distributed in the inner circumferential direction of the signal disk 111 and correspond to four cutter positions respectively, and the signal disk 111 is fixed on the center shaft 106 by the signal disk fastening nuts 124.
The cover base 112 is fixed on the top end of the upper cutter body 105 through screws, a magnet is arranged in a groove 113 in the cover base 112, when the upper cutter body 105 rotates, the magnet can approach each Hall sensor on the signaling disc 111, and the Hall sensors send signals to the controller, so that the position of the cutter rest is obtained.
The mechanically clamped turning tool 300 comprises a tool body 305, a fixed block 302, a blade 303 and a gasket-shaped temperature sensor 304, wherein the blade 303 and the gasket-shaped temperature sensor 304 are respectively provided with an assembly hole with the same diameter, the fixed block 302 is arranged at the upper part of the tool body 305, one end of the fixed block 302 is fixed with the tool body 305 through a screw 301, the screw 301 sequentially penetrates through a positioning hole at the other end of the fixed block 302, the gasket-shaped temperature sensor 304 and an assembly hole on the blade 303 to fasten the blade 303 and the gasket-shaped temperature sensor 304 on the tool body 305, a first through hole 306 is arranged in the front and the back of the tool body 305 and is positioned at the center position of the back side of the gasket-shaped temperature sensor 304 to the back end face of the tool body 305, a second through hole 307 is arranged on the upper surface of the tool body 305 and is vertically connected with the first through hole 306 and used for wiring of the gasket-shaped temperature sensor 304, and the mechanically clamped turning tool 300 is clamped on an upper tool body concave platform of the tool body through the screw.
In this embodiment, the tool holder body 100 can simultaneously clamp 4 clamped turning tools 300.
The signal acquisition cover 200 is assembled on the tool rest body 100, the information acquisition cover 200 is used for acquiring temperature and vibration information of the blade 303 of the machine clamp turning tool 300, and the signal acquisition cover 200 comprises an electromagnetic shielding layer 220, a wireless charging and transmitting module 219, a wireless charging and receiving module 215, an inner aluminum cover 217, an outer aluminum cover 207, a fixed support 204, an acceleration sensor 212, a wireless sensor 210, an infrared temperature sensor 201 and the like.
The inner aluminum cover 217 is hollow, the inner aluminum cover 217 is provided with three layers of drawers, namely an upper drawer 211, a middle drawer 213 and a lower drawer 216 from top to bottom, the upper drawer 211 is provided with a wireless sensor 210 which sends summarized temperature and acceleration information to a controller which is arranged independently in a wireless mode, the middle drawer 213 is provided with an acceleration sensor 212 which collects cutter body vibration information (transmitted from an upper cutter body), the lower drawer 216 is provided with a wireless charging receiving module 215 which converts magnetic energy into electric energy, and a power supply is provided for the acceleration sensor 212, the wireless sensor 210, the infrared temperature sensor 201 and a gasket-shaped temperature sensor 304 on the mechanically clamped turning tool 300.
A wireless charging transmitting module 219 (which converts electric energy into magnetic energy) and an electromagnetic shielding layer 220 are arranged right below the wireless charging receiving module 215 and are in threaded connection with the center shaft 106 of the tool rest body, a power supply of the wireless charging transmitting module 219 is connected through a through hole of the center shaft 106, and the electromagnetic shielding layer 220 is used for isolating a magnetic field of the wireless charging module, so that the work of the Hall sensor 114 in the lower signaling disc 111 is not interfered. The electromagnetic shielding layer 220 is mounted on a boss at the upper end of the central shaft 106, and the wireless charging and transmitting module 219 is matched and fixed with an external thread at the top end of the central shaft 106 through an internal thread.
The distance between the lower end of the electromagnetic shielding layer 220 and the upper end of the magnetic seat of the tool rest body is 1mm, so that friction is prevented from being generated when the tool rest rotates.
The end face diameter of the outer aluminum cover 207 is larger than that of the inner aluminum cover 217, the outer aluminum cover 207 is sleeved on the inner aluminum cover 217, a fixing support 204 is arranged above the outer aluminum cover 207, the fixing support 204 is I-shaped, two ends of the fixing support are parallel and are transverse supports, two ends of a vertical support are respectively connected with the transverse supports through bolts, two screw holes are formed in the middle of the vertical support, the fixing support is mounted on the upper portion of the outer aluminum cover 207 through screws, strip holes are formed in the two ends of the transverse support, the fixing support is fixed on the transverse support through the matching of an upper nut and a lower nut with external threads on the infrared temperature sensor 201, the fixing support 204 on the outer aluminum cover 207 has the function of a wireless sensor 210 antenna in the inner aluminum cover 217, the infrared temperature sensor 201 is used for non-contact monitoring of the temperature of a blade on a mechanical clamp, and the infrared temperature sensor 201 can be aligned with the blade 303 of the mechanical clamp 300 through adjusting the angle of the transverse support and the longitudinal support and adjusting the position of the infrared temperature sensor 201 in a long hole of the transverse support.
The four hall sensors in the upper cutter body signal transmitting disc 111 are connected with the controller in a wired mode and are used for sensing the current station of the electric cutter holder, signals of the acceleration sensor 212, the infrared temperature sensor 201 and the gasket-shaped temperature sensor 304 on the clamped turning tool 300 in the signal acquisition cover 200 are transmitted to the wireless sensor 210 in a wired mode, and the wireless sensor 210 transmits the signals to the controller in a wireless mode.
A through hole is formed on the concave platform of the upper cutter body 105, so that the machine clamp is convenient for wiring the temperature sensor on the turning tool.
In the present embodiment, referring to fig. 6, the wireless sensor 210 is fixed in the upper drawer 211 by a screw, the acceleration sensor 212 is fixed in the middle drawer 213 by a screw, and the wireless charging receiving module 215 is fixed in the lower drawer 216 by a screw.
Fixing seats are respectively arranged at the bottoms of the outer aluminum cover 207 and the inner aluminum cover 217 of the signal acquisition cover 200, fixing holes are uniformly formed around the fixing seats, and the fixing seats are fixed with the upper cutter body 105 of the cutter rest body after screws penetrate through the fixing holes. The outer aluminum cover 207 plays a role in water and dust proofing.
The outer side of the upper end of the inner aluminum cover 217 is provided with symmetrical wiring holes, the outer side of the upper end of the outer aluminum cover 207 is symmetrically provided with downward bending wiring pipes 208 which are used for fixing the power supply and signal wiring of the infrared temperature sensor 201 on the bracket 204 and the gasket-shaped temperature sensor 304 on the machine clamp turning tool 300, and the wireless charging receiving module 215 in the inner aluminum cover 217 supplies power to the acceleration sensor 212, the wireless sensor 210, the infrared temperature sensor 201 and the gasket-shaped temperature sensor 304, and data acquired by the acceleration sensor 212, the infrared temperature sensor 201 and the gasket-shaped temperature sensor 304 are transmitted through the wireless sensor 210 in the inner aluminum cover 217. The opening of the wiring pipe 208 faces downwards, so that the waterproof and dust-proof effects can be better achieved.
The bottoms of the upper drawer 211, the middle drawer 213 and the lower drawer 216 are hollow, which provides convenience for wiring, and further, the wireless charging receiving module 215 is placed on the lower drawer 216.
The machine clamp lathe tool 300 adopts a gasket-shaped temperature sensor 304 to replace the traditional gasket on the machine clamp lathe tool 300, so that the temperature of the machine clamp lathe tool blade can be sensed more accurately, and the monitoring effect is improved.
The tool changing working principle of the tool rest body is as follows:
after the tool changing instruction is sent, the motor rotates positively, and the screw rotates clockwise through the transmission of the worm, the worm wheel and the screw rod.
The internal thread at the center of the upper cutter body is matched with the screw rod, and when the screw rod rotates, the upper cutter body has two movement modes, namely, synchronously rotates along with the screw rod, ascends or descends, and depends on whether the circumferential direction of the upper cutter body is limited by the freedom degree.
When the upper cutter body and the lower cutter body are completely separated from each other, the upper cutter body and the lower cutter body are synchronously rotated along with the screw rod.
Meanwhile, the upper clutch plate at the top end of the worm drives the two clutch pins to rotate clockwise synchronously with the upper cutter body, the clutch pins slide clockwise on the upper surface of the lower clutch plate, and each time a quarter of circumference slides, the clutch pins fall into the right-angle trapezoid-shaped groove of the lower clutch plate and slide out of the groove along a slope.
When the upper cutter body rotates to a target cutter position (at the moment, the lower end of the clutch pin is positioned in a groove of the lower clutch disc, the magnet in the cover seat rotates to the position of the target cutter position corresponding to the Hall sensor on the signaling disc), the Hall sensor of the target cutter position on the signaling disc sends a cutter position signal to the controller, and the controller controls the motor to stop rotating forwards and start rotating reversely.
Due to the inertia effect, the screw rod, the upper cutter body, the upper clutch disc and the clutch pin are firstly decelerated to zero, at the moment, the clutch pin slides out of the lower clutch disc groove corresponding to the target cutter position along the slope of the clutch disc groove, then the screw rod, the upper cutter body, the upper clutch disc and the clutch pin start to rotate anticlockwise synchronously, after the clutch pin returns to the lower clutch disc groove corresponding to the lower target cutter position anticlockwise again, the anticlockwise rotation of the clutch pin is limited due to the fact that the anticlockwise slope of the groove is a right angle slope, namely the circumferential rotation freedom degree of the screw rod is limited, but the upper cutter body still has the inertia of anticlockwise rotation, so that the upper cutter body starts to descend along the external thread of the screw rod, and the end face teeth of the upper cutter body and the end face teeth of the lower cutter body are meshed to finish accurate positioning and locking. At this time the motor is stopped in reverse rotation, and (5) finishing tool changing.
The wireless sensor can use a wireless sensor based on ZigBee, wifi or Bluetooth technology;
the acceleration sensor uses a piezoelectric triaxial acceleration sensor, and the measuring range is 5g;
the wireless charging module is composed of a wireless charging transmitting module and a wireless charging receiving module, wherein the input voltage of the wireless charging transmitting module is direct current 24V, and the output voltage of the wireless charging receiving module is direct current 24V;
the range of the infrared temperature sensor is 0-800 ℃;
the measuring range of the gasket-shaped temperature sensor on the mechanically clamped turning tool is 0-800 ℃.
The controller comprises a PLC controller, a touch screen, a wireless sensor, an audible and visual alarm and a peripheral circuit, wherein the PLC controller is respectively connected with the touch screen, the wireless sensor, the audible and visual alarm and the intermediate relay.
The PLC is the core of the electric tool rest controller, and a tool changing program, a temperature and acceleration data acquisition and processing program are set in the PLC.
The touch screen is connected with the PLC through a network cable, and functions of setting temperature and acceleration thresholds, automatic or electric tool changing control, inquiring vibration acceleration historical data and the like are performed through the touch screen;
The wireless sensor is used for wirelessly receiving temperature and acceleration information of the machine clamp turning tool on the tool rest body and sending the information to the PLC in a wired mode.
The audible and visual alarm is used for displaying the working state of the tool rest. The device is characterized by comprising a first threshold value, a second threshold value, a third threshold value, a fourth threshold value, a fifth threshold value, a sixth threshold value, a seventh threshold value, a eighth threshold value, a fourth threshold value, a fifth threshold value, a sixth threshold value and a seventh threshold value;
the peripheral circuit is composed of a leakage protection switch, a fuse, a contactor, an intermediate relay, a transformer, a direct current power supply, a terminal strip, a cable and the like and is used for power supply and output control of the PLC.
The working method of the controller for controlling the electric knife rest is as follows:
1. automatically selecting a cutter;
1-1) selecting a button corresponding to a required tool bit on a touch screen, and sending information to a PLC (programmable logic controller) by the touch screen;
1-2) the PLC analyzes signals transmitted by all Hall sensors, judges whether a target tool position is the current tool position of the electric tool rest, if so, does not act, and if not, enters step 1-3);
1-3) an intermediate relay corresponding to the forward rotation of the driving motor is powered on, after the intermediate relay is powered on, the forward rotation of the driving motor is powered on, the forward rotation three-phase power supply is connected, the motor starts to rotate forward, and the cutter body on the cutter rest body is driven to rotate clockwise;
When the target cutter position is reached, the Hall sensor on the signal transmitting disc sends signals to the PLC controller, the PLC controller controls the motor to rotate reversely, the fluted disc of the upper cutter body and the fluted disc of the lower cutter body are meshed, the upper cutter body and the fluted disc of the lower cutter body are locked on the selected cutter position, the PLC controls the motor to rotate reversely, the reverse power supply is powered off, and automatic cutter changing is completed.
2. Inching a knife;
And pressing a point-operated knife selecting button on the touch screen, and controlling the knife body on the electric knife rest to rotate 90 degrees clockwise by the PLC, namely, switching 1 knife position clockwise, and finishing point-operated knife switching. Every time the button is pressed, the cutter holder is rotated clockwise for 1 cutter position.
3. Setting a threshold value;
The temperature threshold value 1, the temperature threshold value 2, the acceleration threshold value 1 and the acceleration threshold value 2 are arranged on the touch screen, the set threshold values have the functions of automatic storage and power-off preservation, the audible and visual alarm displays the working state of the tool rest, the audible and visual alarm displays green when the tool rest works normally, the audible and visual alarm displays yellow and flashes when the temperature or the acceleration exceeds a first threshold value, the audible and visual alarm displays red light and flashes and buzzes when the temperature or the acceleration exceeds a second threshold value, and a machine tool control system and a spindle power supply are cut off.
4. A machine tool control system and a main shaft power supply control;
The machine tool control system/spindle control power supply can be directly controlled through a switch button on the touch screen.
5. Querying historical data;
Historical data of query temperature and acceleration can be selected on the touch screen and a trend graph can be generated.
Referring to fig. 11, the main circuit electrical schematic diagram of the electric tool rest of the invention is that three-phase alternating current is connected into a leakage protection switch, the leakage protection switch is connected into a fuse, and four paths of the three-phase alternating current are respectively a contactor KM1 (three-phase asynchronous motor forward rotation), a contactor KM2 (three-phase asynchronous motor reverse rotation), a contactor KM3 (main shaft and machine tool control system power supply) and a transformer TC (380V alternating current is converted into 110V alternating current to be used by a contactor coil and a switching power supply) after the three-phase alternating current is discharged from the fuse. The three-phase power supply is connected into U, V, W phases of the motor after coming out of the contactor KM1 and the contactor KM2 (the contactor KM2 realizes motor reversal through phase change). The low-voltage side 110V of the transformer is connected with the normally open contacts of 3 pairs of intermediate relays, the normally open contacts of the intermediate relays KA1 and KA2 are respectively connected with the coils of the contactor KM1 and the contactor KM2, and the normally open contact of the intermediate relay KA3 is connected with the coil of the contactor KM 3.
Referring to FIG. 12, the electric schematic diagram of the control circuit of the electric knife rest of the invention, the wiring of I/O switching value input signals in the PLC is L+ connected with DC24V+ and M connected with DC24V-. The "+" part of the signal transmitting disc is connected with DC24V+ "and the" - "part is connected with DC24V-. The Hall element adopts an NPN wiring mode, and four Hall sensor signal lines are connected into I0.0, I0.1, I0.2 and I0.3 of the PLC and correspond to the cutter positions one by one. 1M of PLC is connected with DC24V+.
The wiring of the two analog quantities in the PLC is that the two analog quantity outputs of the wireless sensor (receiving end) are respectively temperature information and vibration information, and the two analog quantity outputs are respectively connected to the two analog quantity inputs of the PLC.
The output signal wiring in the PLC is that the PLC outputs and controls coils of the two intermediate relays KA1 and KA2, and the forward and reverse rotation of the motor are further controlled through the two contactors KM1 and KM 2. The PLC outputs and controls the coil of the third intermediate relay KA3, and the power supply of the main shaft and the machine tool system is further controlled through the third contactor KM 3.
Referring to fig. 13, an automatic knife selection flowchart of the present invention;
When the program is started, a cutter position number is selected on the touch screen, a corresponding button is pressed, the automatic cutter selecting program can automatically compare the current cutter position through the Hall element, if the current cutter position is consistent with the target cutter position, the program is directly ended, when the target cutter position is inconsistent with the current cutter position, the program can execute the forward rotation of the motor, the program can execute one comparison every time when one cutter position is rotated until the current cutter position is consistent with the target cutter position, and then the PLC stops the motor to execute the reverse rotation of the motor for delaying 800ms, and then the program is stopped.
Referring to fig. 14, a flow chart of a knife rest jog knife selecting procedure of the present invention;
In the inching knife selecting control program, a inching button is pressed, the motor is firstly executed to rotate positively, meanwhile, the program circularly searches for the next Hall sensor signal, if the Hall sensor signal is not received, the motor continues to rotate positively, if the Hall sensor signal is received, the motor stops rotating positively to execute reverse rotation, and the program is ended after time delay is 800 ms.
Referring to fig. 15, a sensor monitoring information control flow chart of the present invention;
The temperature sensor inputs a voltage signal of 0-10V to the PLC, and the PLC converts the voltage signal into a value in the range of 0-27648. The digital signal of 0-27648 is required to be multiplied by the maximum value/27648 =measured value of the temperature sensor during programming, the light alarm displays green when the tool rest works normally, the sound and light alarm displays yellow and flashes when the temperature or the acceleration exceeds a first threshold value, and the sound and light alarm displays red light and flashes and buzzes when the temperature or the acceleration exceeds a second threshold value, and meanwhile, the machine tool control system and a main shaft power supply are cut off.
Claims (10)
1. The multifunctional electric tool rest is characterized by comprising a tool rest body, a machine clamp turning tool, a signal acquisition cover and a controller, wherein the controller is independently arranged and adopts a PLC (programmable logic controller);
The tool rest body comprises a motor, a coupler, a lower tool body, a center shaft, an upper tool body, a worm, a bearing, a worm wheel, a screw, a lower clutch disc, a clutch pin, an upper clutch disc, a thrust ball bearing, a retaining ring, a signaling disc and a cover seat;
the coupler is of a clamping sleeve type structure and is used for connecting the motor rotor and the worm;
the two bearings are respectively assembled in the lower cutter body and positioned at two ends of the worm;
the lower cutter body is of a cuboid structure, and the upper surface of the lower cutter body is provided with end face teeth;
The middle shaft is fixed on the lower cutter body, the upper part of the middle shaft is a hollow circular tube, and the top of the circular tube is provided with external threads; the lower part of the middle shaft is a disc, a positioning step is arranged on the disc and used for assembling and positioning with the lower cutter body, a worm wheel, a screw rod, an upper clutch disc, a thrust ball bearing, a stop ring and a signaling disc are coaxially arranged on the middle shaft, the worm wheel is concentrically arranged on the upper surface of the disc at the lower part of the middle shaft, the screw rod is matched with the worm wheel through a key slot, the upper clutch disc is matched with the screw rod through two positioning pins, and when the motor drives the screw rod to rotate, the worm wheel, the screw rod and the upper clutch disc keep synchronous rotation;
The upper cutter body is of a cuboid structure, an inner concave platform is arranged along the four walls of the outer side and is used for placing a machine clamp turning tool, and a screw is used for fastening the machine clamp turning tool in the inner concave platform through the upper surface of the upper cutter body;
an upper clutch disc through hole is arranged in the middle of the upper clutch disc, and the diameter of the upper clutch disc through hole is larger than the diameter of the middle shaft; the upper clutch disc is fixed at the upper end of the screw rod through a locating pin, and the upper clutch disc and the screw rod synchronously rotate;
The upper surface of the lower clutch disc is provided with four radial grooves which are separated by 90 degrees on the circumference, the cross section of each groove is in a right-angle trapezoid shape, and two angles at the bottom of each groove are respectively 90 degrees and 145 degrees in the clockwise direction, so that a right-angle slope and a slope are formed;
The upper end of the clutch pin is arranged in a groove on the lower surface of the upper clutch disc, and the lower end of the clutch pin is in direct contact with the upper surface of the lower clutch disc;
The thrust ball bearing is arranged on the upper surface of the upper clutch disc on the middle shaft;
The retaining ring is arranged on the upper surface of the thrust ball bearing, is fixed and positioned through a wedge key arranged in a key slot of the central shaft, and is fastened through a retaining ring fastening nut, and the retaining ring is used for limiting the upward movement position of the upper clutch disc;
the signal disc positioning gear ring is arranged on the center shaft and is positioned above the retaining ring fastening nut, and is positioned through a positioning key at the inner side of the signal disc positioning gear ring and a positioning key groove of the center shaft;
The transmitting disc is positioned by the inner teeth and the outer teeth of the transmitting disc positioning gear ring, and four Hall sensors are uniformly distributed in the circumferential direction of the transmitting disc and correspond to the four cutter positions respectively;
The cover seat is fixed at the top end of the upper cutter body through a screw, a magnet is arranged in a groove in the cover seat, and when the upper cutter body rotates, the magnet approaches each Hall sensor on the signaling disc, and the Hall sensors send signals, so that the position of the cutter rest is obtained;
the machine clamp lathe tool comprises a cutter body, a fixed block, a cutter blade and a gasket-shaped temperature sensor, wherein the cutter blade and the gasket-shaped temperature sensor are respectively provided with an assembly hole with the same diameter, the upper part of the cutter body is provided with the fixed block, one end of the fixed block is fixed with the cutter body through a screw, the screw sequentially passes through a positioning hole at the other end of the fixed block, the gasket-shaped temperature sensor and the assembly hole on the cutter blade to fasten the cutter blade and the gasket-shaped temperature sensor on the cutter body, the cutter body is provided with a first through hole from the front and back of the cutter body to the rear end surface of the cutter body at the center position of the rear side of the gasket-shaped temperature sensor, the upper surface of the cutter body is provided with a second through hole, and the second through hole is vertically connected with the first through hole and used for wiring of the gasket-shaped temperature sensor;
the tool rest body clamps 4 machine clamping turning tools simultaneously and corresponds to four tool positions;
The signal acquisition cover is assembled on the tool rest body and is used for acquiring temperature and vibration information of the machine clamp turning tool blade, and comprises an electromagnetic shielding layer, a wireless charging transmitting module, a wireless charging receiving module, an inner aluminum cover, an outer aluminum cover, a fixed support, an acceleration sensor, a wireless sensor and an infrared temperature sensor;
The inner aluminum cover is hollow, and is provided with three layers of drawers, namely an upper drawer, a middle drawer and a lower drawer from top to bottom, wherein the upper drawer is provided with a wireless sensor which sends summarized temperature and acceleration information to an independently arranged controller in a wireless mode;
The power supply of the wireless charging transmitting module is connected with a through hole of the center shaft, the electromagnetic shielding layer is arranged on a boss at the upper end of the center shaft, and the wireless charging transmitting module is matched and fixed with an external thread at the top end of the center shaft through an internal thread;
The end face diameter of the outer aluminum cover is larger than that of the inner aluminum cover, the outer aluminum cover is sleeved on the inner aluminum cover, a fixing support is arranged above the outer aluminum cover and is I-shaped, two ends of the fixing support are parallel transverse supports, two ends of the vertical support are respectively connected with the transverse supports through screws, two screw holes are formed in the middle of the vertical support, the fixing support is arranged on the upper portion of the outer aluminum cover through screws, strip holes are formed in the two ends of the transverse support, the fixing support is fixed on the transverse supports through the matching of an upper nut and a lower nut with external threads on an infrared temperature sensor, the outer aluminum cover fixing support also has the function of a wireless sensor antenna in the inner aluminum cover, and the infrared temperature sensor is used for non-contact monitoring of the temperature of a blade on a machine clamp turning tool.
2. The multifunctional electric knife rest according to claim 1, wherein the four Hall sensors in the upper knife body signaling disc are connected with the controller in a wired mode and used for sensing the current station of the electric knife rest, signals of the acceleration sensor, the infrared temperature sensor and the temperature sensor on the machine clamp turning tool in the signal acquisition cover are transmitted to the wireless sensor in a wired mode, and the wireless sensor transmits the signals to the controller in a wireless mode.
3. The multifunctional electric knife rest according to claim 1, wherein the electromagnetic shielding layer is kept at a distance of 1mm from the upper end of the magnetic seat of the knife rest body, so that friction is prevented from being generated when the knife rest rotates.
4. The multifunctional electric knife rest according to claim 1, wherein the probe of the infrared temperature sensor is aligned with the blade of the mechanically clamped turning tool by adjusting the angle between the transverse support and the longitudinal support and adjusting the position of the infrared temperature sensor in the long hole of the transverse support.
5. The multifunctional electric knife rest according to claim 1, wherein the through hole is formed in the concave platform of the upper knife body, so that the temperature sensor on the machine clamping turning tool can be conveniently wired.
6. The multifunctional electric knife rest according to claim 1, wherein the wireless sensor is fixed in the drawer on the inner aluminum cover through a screw, the acceleration sensor is fixed in the drawer in the inner aluminum cover through a screw, and the wireless charging receiving module is fixed in the drawer under the inner aluminum cover through a screw.
7. The multifunctional electric knife rest according to claim 1, wherein the bottoms of the outer aluminum cover and the inner aluminum cover of the signal acquisition cover are respectively provided with a fixed seat, fixing holes are uniformly formed in the periphery of the fixed seat, the outer aluminum cover is fixed with the upper knife body of the knife rest body after penetrating through the fixing holes through screws, and the outer aluminum cover has the functions of water resistance and dust resistance.
8. The multifunctional electric knife rest according to claim 1, wherein symmetrical wiring holes are formed in the outer side of the upper end of the inner aluminum cover, downward bending wiring pipes are symmetrically formed in the outer side of the upper end of the outer aluminum cover and used for power supply and signal wiring of an infrared temperature sensor on a fixed support and a gasket-shaped temperature sensor on a mechanically clamped turning tool, and the hole opening of the wiring pipe faces downwards and can prevent water and dust.
9. The multifunctional electric knife rest according to claim 1, wherein the bottoms of the upper drawer, the middle drawer and the lower drawer are hollowed out.
10. The multifunctional electric knife rest according to claim 1, wherein the motor is a three-phase alternating current asynchronous motor.
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| FR2904446B1 (en) * | 2006-07-28 | 2008-10-03 | Snecma Sa | METHOD FOR DETECTING AND QUANTIFYING DRILLING ANOMALIES |
| US9604332B2 (en) * | 2013-04-04 | 2017-03-28 | Microlution Inc. | Fast live tool system |
| CN204725244U (en) * | 2015-07-08 | 2015-10-28 | 无锡职业技术学院 | Milling machine clamping rectifier |
| CN105716845B (en) * | 2016-02-01 | 2018-05-15 | 吉林大学 | Simulate the power knife rest performance detection and monitoring device and method of typical condition loading |
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