CN117620240A - Machine tool with electric clamping system - Google Patents
Machine tool with electric clamping system Download PDFInfo
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- CN117620240A CN117620240A CN202311685308.XA CN202311685308A CN117620240A CN 117620240 A CN117620240 A CN 117620240A CN 202311685308 A CN202311685308 A CN 202311685308A CN 117620240 A CN117620240 A CN 117620240A
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- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims description 60
- 239000003638 chemical reducing agent Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 125000004122 cyclic group Chemical group 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Abstract
The invention provides a machine tool with an electric clamping system, which comprises a driving motor assembly, a rotary force transmitter, a machine tool main body and a chuck, wherein the machine tool main body comprises a pull rod and a main shaft; when a workpiece is required to be clamped or loosened, the driving motor assembly is in transmission connection with the rotary force transmitter, the rotary force transmitter is disconnected with the main shaft of the machine tool main body, and at the moment, the driving motor assembly can drive the pull rod to move forwards and backwards along the axial direction through the rotary force transmitter so as to open and close the clamping jaws of the chuck; when a workpiece needs to be processed, the driving motor component is separated from transmission connection with the rotary force transmitter, the rotary force transmitter is in transmission connection with a main shaft of the machine tool main body, and when the main shaft of the machine tool main body rotates, the clamping jaw of the chuck is driven to rotate.
Description
Technical Field
The invention relates to the technical field of machine tool machining, in particular to a machine tool with an electric clamping system.
Background
The chuck is a mechanical device on a machine tool for clamping a workpiece. The workpiece is clamped and positioned by the radial movement of the movable claws uniformly distributed on the chuck body. The chuck generally comprises a chuck body, movable claws and a claw driving motor assembly. The minimum diameter of the chuck body is 65 mm, the maximum diameter can reach 1500 mm, and a through hole is formed in the center so as to pass through a workpiece or a bar stock; the back of the machine tool is provided with a cylindrical or short conical structure, and the back of the machine tool is directly connected with the end part of the main shaft of the machine tool or is connected with the end part of the main shaft of the machine tool through a flange plate. The chuck is usually mounted on lathes, cylindrical grinding machines and internal grinding machines, and can also be matched with various indexing devices for use on milling machines and drilling machines. The existing mainstream chuck can be divided into: manual chucks, air chucks and hydraulic chucks.
The existing clamping system has the structure of adopting the hydraulic station and the high-pressure oil cylinder, the application time is long, the technology is relatively mature, but in the production and use process, the motor is required to apply work to compress the hydraulic oil to form high pressure, then the chuck is pushed to clamp the workpiece, the energy consumption is high, the cost is high, and the influence on the environment is high when the hydraulic oil leaks in the energy conversion process.
202311065478.8 is an electric chuck in which the rotational force transmitting portion is a single component fixedly mounted on the spindle mount and is held stationary in a relative position throughout the workpiece clamping process, and is matched with the spindle rotation of the machine tool only by the high-speed rotation of the output bearing, so that the greater axial push-pull force generated during clamping of the workpiece acts on the output bearing, resulting in the bearing becoming hot, worn or stuck.
Disclosure of Invention
Based on this, it is necessary to provide a machine tool with an electric clamping system that is more stable.
The invention provides a machine tool with an electric clamping system, which comprises a driving motor assembly, a rotary force transmitter, a machine tool main body and a chuck, wherein the machine tool main body comprises a pull rod and a main shaft, the rotary force transmitter is connected with the pull rod of the machine tool main body, the pull rod is used for driving clamping jaws of the chuck to open and close, the driving motor assembly and the rotary force transmitter can be in transmission connection or disconnection, and the rotary force transmitter and the main shaft of the machine tool main body can be in transmission connection or disconnection;
when a workpiece is required to be clamped or loosened, the driving motor assembly is in transmission connection with the rotary force transmitter, the rotary force transmitter is in transmission connection with a main shaft of the machine tool main body, and at the moment, the driving motor assembly can drive the pull rod to move forwards and backwards along the axial direction through the rotary force transmitter so as to open and close the clamping jaw of the chuck;
when a workpiece needs to be processed, the driving motor assembly is separated from transmission connection with the rotary force transmitter, the rotary force transmitter is in transmission connection with a main shaft of the machine tool main body, and when the main shaft of the machine tool main body rotates, the clamping jaw of the chuck is driven to rotate.
Preferably, the driving motor assembly is in transmission connection or disconnection with the rotary force transmitter through a first clutch mechanism, and the rotary force transmitter is in transmission connection or disconnection with the main shaft of the machine tool main body through a second clutch mechanism.
Preferably, the first clutch mechanism and the second clutch mechanism each comprise a magnetic seat and a clutch piece which can be connected or disconnected with each other, and the connection or disconnection of the clutch piece is controlled by powering on or off the magnetic seat.
Preferably, the rotary force transmitter comprises a mounting plate and a screw rod, the screw rod penetrates through the mounting plate, and the magnetic seats are respectively fixed on two sides of the mounting plate and do not move along with the rotary force transmitter.
Preferably, the first clutch mechanism is arranged at the input end of the rotary force transmitter, and the second clutch mechanism is arranged at the middle part of the input end of the rotary force transmitter.
Preferably, the rotary force transmitter comprises a screw rod, the driving motor assembly and the screw rod are in transmission connection or separation and transmission connection through a first clutch mechanism, the first clutch mechanism comprises a first clutch plate, a first rotating seat and a first magnetic seat, the first clutch plate is fixed on the driving motor assembly, the first rotating seat is sleeved on the screw rod of the rotary force transmitter and can rotate along with the screw rod, and the first magnetic seat can enable the first clutch plate to be in suction connection with the first rotating seat, so that the driving motor assembly is in transmission connection with the screw rod.
Preferably, after the first clutch plate is disconnected from the first rotating seat, a space of 0.1-1mm is reserved between the first clutch plate and the first rotating seat.
Preferably, the rotary force transmitter is in transmission connection with the spindle of the machine tool main body or is in transmission connection with the spindle of the machine tool main body through a second clutch mechanism, the second clutch mechanism comprises a second clutch plate, a second rotating seat and a second magnetic seat, the second clutch plate is connected with the spindle of the machine tool main body through a flange plate, the second rotating seat is sleeved on the screw rod of the rotary force transmitter and can rotate along with the screw rod, and when the second magnetic seat is electrified or de-electrified, the second clutch plate is in suction connection with the second rotating seat, so that the rotary force transmitter is in transmission connection with the spindle of the machine tool main body.
Preferably, after the second clutch plate is disconnected from the second rotating seat, a space of 0.1-1mm is formed between the second clutch plate and the second rotating seat.
Preferably, the machine tool body comprises a pulley fixedly coupled to the machine tool spindle and a pulley flange for mounting the rotary force transmitter.
The main part of the machine tool with the electric clamping system can rotate along with the rotation of the main shaft, and the axial acting force generated when the pushing/pulling action occurs can be directly acted on the main shaft of the machine tool instead of being carried by a bearing, so that the structure has higher reliability.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intentionally drawn to scale on actual size or the like, with emphasis on illustrating the principles of the invention.
FIG. 1 is a schematic diagram of a machine tool with an electric clamping system according to the present invention;
FIG. 2 is a schematic cross-sectional view of a machine tool with an electric clamping system according to the present invention;
FIG. 3 is an enlarged schematic view of the portion A in FIG. 2;
FIG. 4 is a schematic diagram of a rotary force transmitter according to the present invention;
FIG. 5 is an enlarged schematic view of the portion B of FIG. 4;
fig. 6 is an enlarged schematic view of the C part of the structure in fig. 4.
Detailed Description
In order that the invention may be understood more fully, the invention will be described with reference to the accompanying drawings.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to and integrated with the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 6, the present invention provides a machine tool with an electric clamping system, which comprises a driving motor assembly 1, a rotary force transmitter 2, a machine tool body 4 and a chuck (not shown), wherein the chuck structure can be referred to as 202311065478.8, the machine tool body 4 comprises a pull rod 42 and a main shaft 41, the rotary force transmitter 2 is connected with the pull rod 42 of the machine tool body 4, the pull rod 42 is used for driving clamping jaws of the chuck to open and close, the driving motor assembly 1 and the rotary force transmitter 2 can be in transmission connection or disconnection through a first clutch mechanism, and the rotary force transmitter 2 and the main shaft 41 of the machine tool body 4 can be in transmission connection or disconnection through a second clutch mechanism.
When a workpiece is required to be clamped or loosened, the first clutch mechanism enables the driving motor assembly 1 to be in transmission connection with the rotary force transmitter 2, the rotary force transmitter 2 is separated from transmission connection with the main shaft 41 of the machine tool main body 4, and at the moment, the driving motor assembly 1 can drive the pull rod 42 to move forwards and backwards along the axial direction through the rotary force transmitter 2 so as to enable the clamping jaws of the chuck to be opened and closed; at this time, the rotation of the machine tool spindle 41 does not affect the rotation force transmitter 2, so that the problem of cable winding during high-speed rotation of the machine tool spindle 41 is avoided.
When a workpiece is clamped and the workpiece is required to be processed next, the driving motor assembly 1 and the rotary force transmitter 2 are separated from transmission connection, the driving force of the driving motor assembly 1 is not transmitted to the rotary force transmitter 2, the clamping jaw is prevented from being opened due to the fact that the pull rod 42 is pulled, at the moment, the rotary force transmitter 2 is in transmission connection with the main shaft 41 of the machine tool main body 4, the rotary force transmitter 2 is integrated with the machine tool main body 4, the rotary force transmitter 2 is tightly rotated at a high speed along with the main shaft 41 of the machine tool, the fact that the rotary force transmitter 2 cannot loosen is guaranteed, and the clamping jaw is prevented from being opened due to the fact that the pull rod 42 is pulled due to the fact that the rotary force transmitter 2 loosens.
The machine tool with the electric clamping system provided in the embodiment is simpler, more reliable, green and environment-friendly. By means of the first clutch mechanism and the second clutch mechanism, the clamping process and the rotating process of the machine tool spindle 41 can be separated, and the axial acting force generated when the pushing/pulling action occurs directly acts on the machine tool spindle 41 instead of being carried by a bearing, so that the structure of the embodiment has higher reliability.
Referring to fig. 4, the rotary force transmitter 2 includes a first clutch mechanism, a second clutch mechanism, a screw 21, a screw nut 22, a tie rod connecting shaft 23, a first mounting plate 24, a second mounting plate 25, a support plate 26, a first flange fixing bolt 27, a first flange 28, a bearing mount 31, a bearing 311, a bearing surface flange 32, and a shield plate 33.
The screw rod 21 is installed at the center of the rotary force transmitter 2 through a bearing 311 and can be used as a power input shaft to synchronously rotate along with the speed reducer to provide push/pull force.
The screw nut 22 is matched with the screw 21, when the screw 21 rotates, the screw nut 22 can translate back and forth, the screw movement is converted into linear movement by the cooperation of the screw nut 22 and the screw nut, and one end of the screw nut 22 is provided with external threads for installing a pull rod connecting shaft 23. The screw nut mounting sleeve 221 is fixedly mounted on the bearing mounting seat 31 for radially positioning the screw nut, preventing the screw nut from rotating with the screw but axially sliding. The end face of the screw rod is provided with a limiting block 222 for limiting and preventing the screw rod nut from sliding out and falling off due to over-travel.
The rod connecting shaft 23 is screw-connected at one end to a lead screw nut and coupled at the other end to a rod 42 in the spindle 41 of the machine tool for transmitting the push/pull force.
The first mounting plate 24 is used for mounting a speed reducer; is fixedly connected to a mounting seat of a machine tool spindle 41 through a mounting rod 29 and a nut 30. The support plate 26 is used to fix the first mounting plate 24 and the second mounting plate 25. The first flange fixing bolts 27 are mounted on the first flange 28, and may be provided in plural or single, and the first flange 28 is fixed to the output shaft of the speed reducer and rotatable with the speed reducer. The second mounting plate 25 is fixed to the machine tool body 4 by a mounting rod and a nut.
The bearing mounting seat 31 is sleeved on the input end side of the screw rod and is fixedly mounted on the flange plate of the belt pulley through bolts, and the inside of the bearing mounting seat is used for mounting the positioning bearing 311. The bearing 311 is installed in the bearing installation seat 31 and sleeved at the input end of the screw rod, and is used for ensuring that the screw rod rotates smoothly, and simultaneously, the bearing bears the pulling force from the axial direction when the tool is clamped or released, and the end face thrust ball bearing 311 adopted in the embodiment can also adopt other bearings 311 such as a self-aligning roller bearing 311. The bearing surface flange 32 is fixed on the bearing mounting seat 31 through bolt installation, and can compress the positioning bearing 311. The protection plate 33 cooperates with the support plate 26 to form a protection cover to prevent foreign objects from falling into the interior.
The first clutch mechanism and the second clutch mechanism may employ electromagnetic clutch or mechanical clutch.
Referring to fig. 4-6, in a further preferred embodiment, the first clutch mechanism and the second clutch mechanism each comprise a magnetic base and an interconnecting or disconnecting clutch member, the magnetic base of the first clutch mechanism being referred to as a first magnetic base 341 and the magnetic base of the second clutch mechanism being referred to as a second magnetic base 342. The clutch is controlled to be connected or disconnected by powering on or off the magnetic seat. The magnetic seat is internally provided with an electromagnetic coil which can be electrified, so that whether the magnetic seat has magnetic attraction or not can be controlled when the magnetic seat is electrified or not.
In the preferred embodiment, the first clutch mechanism and the second clutch mechanism can adopt a normally open structure or a normally closed structure, and if the normally open structure is adopted, the magnetic seat is electrified to enable the clutch piece to be connected, and when the magnetic seat is not electrified, the clutch piece is separated; and if the normally closed structure is adopted, the magnetic seat is electrified to enable the clutch piece to be separated, and the clutch piece is connected when the magnetic seat is not electrified.
By adopting the normally closed structure, the electric energy consumption can be reduced, the clamping stability in the machining process can be improved, and the workpiece can be ensured to be still clamped effectively without loosening and falling off under the condition of sudden power failure in the workpiece clamping and rotating process.
Referring to fig. 4, in a preferred embodiment, the magnetic seats of the first and second clutch mechanisms are fixed to both sides of the second mounting plate 25, respectively, and do not move with the screw 21 of the rotary force transmitter 2.
Referring to fig. 4-5, in a preferred embodiment, the clutch member of the first clutch mechanism specifically includes a first clutch plate 351 and a first rotating seat 361, the first clutch plate 351 is fixed on the driving motor assembly 1, the first rotating seat 361 is sleeved on the screw rod 21 of the rotary force transmitter 2 and can rotate along with the screw rod 21, and the first magnetic seat 341 can control the first clutch plate 351 to engage with the first rotating seat 361, so that the driving motor assembly 1 is in transmission connection with the screw rod 21. Specifically, the first clutch plate 351 is fixedly mounted on the first flange 28, and a village material with good magnetic permeability is adopted, and after the first clutch plate 351 is disconnected from the first rotating seat 361, a space of 0.1-1mm, a space of 0.2-0.4mm, a space of 0.3mm and a space of 0.2 mm are formed between the first clutch plate 351 and the first rotating seat 361, and the clutch plates are not connected with each other.
The first rotating seat 361 is fixedly sleeved at one end of the input shaft of the screw rod 21 through a key, and can apply kinetic energy (torque) transmitted by the first clutch plate 351 to the screw rod 21 to drive the screw rod to rotate. Under the action of the magnetic seat, the first clutch plate 351 can slightly deform to be attached to the end face of the first rotary seat, and the kinetic energy (torque) output by the speed reducer is transmitted to the first rotary seat 361 through the combined action of the magnetic attraction and the friction.
The specific theory of the specific operation of the first clutch mechanism (exemplified by a normally open structure) is as follows:
referring to fig. 4 and 6, the first clutch mechanism is mounted on the power (torque) input end of the rotary force transmitter 2, and the first flange 28 is fixedly coupled with the first clutch plate 351 as a whole and is mounted and fixed on the output shaft of the speed reducer. The first rotating seat 361 is sleeved and fixed at the input end of the screw rod to ensure synchronous rotation of the first rotating seat 361 and the screw rod, and a space of 0.3mm is arranged between the end face of the first rotating seat 361 and the end face of the first clutch plate 351. The first electromagnetic magnet holder is fixedly mounted on the second mounting plate 25 so that it cannot rotate with the screw of the rotary force transmitter 2. When the first electromagnetic magnetic seat is electrified to generate electromagnetic attraction, the end face of the first rotating seat 361 and the end face of the first clutch plate 351 are mutually attracted (the distance is 0 at the moment) to form an integral part, and power (torque) transmitted through speed reduction can directly act on the screw rod at the moment to drive the screw rod to rotate, so that the screw rod nut can be further driven to slide forwards and backwards. When the first electromagnetic magnetic seat is powered off, the magnetic force disappears, and the distance between the end face of the first rotating seat 361 and the end face of the first clutch plate 351 is restored to 0.3mm, so that the two mutually independent actions are not influenced.
In a preferred embodiment, the rotary force transmitter 2 is in transmission connection with the spindle 41 of the machine tool body 4 or is in disconnection from the transmission connection through a second clutch mechanism, the second clutch mechanism comprises a second clutch plate, a second rotating seat 362 and a second magnetic seat 342, the second clutch plate is connected with the spindle 41 of the machine tool body 4, the second rotating seat 362 is sleeved on the screw rod 21 of the rotary force transmitter 2 and can rotate along with the screw rod 21, and when the second magnetic seat 342 is electrified or de-electrified, the second clutch plate is attracted with the second rotating seat 362, so that the rotary force transmitter 2 is in transmission connection with the spindle 41 of the machine tool body 4. After the second clutch plate is disconnected with the second rotating seat 362, a space of 0.1-1mm is provided between the second clutch plate and the second rotating seat 362, a space of 0.2-0.4mm is further provided, a space of 0.3mm is further provided, the space can ensure better connection and disconnection, the space is avoided being too large, better suction can not be realized, and meanwhile, the space is avoided being too small, and the disconnection effect is too poor.
The second rotating seat 362 is fixedly sleeved on one end of the screw rod input shaft near the middle side through a key and can transmit kinetic energy (torque) from the screw rod to the second clutch plate
The second clutch plate 352 is fixedly arranged on the end face flange of the bearing 311, and is made of village materials with better magnetic conductivity, and keeps a distance of 0.3mm from the second rotating seat when the materials are not magnetically attracted, and the materials are not mutually connected; when the second magnetic base 342 is electrified to generate magnetic attraction force, the second clutch plate 352 can slightly deform to be attached to the end face of the second rotating base 362, the screw rod and the rotary force rotator are relatively fixed on the machine tool spindle 41 through the combined action of the magnetic attraction force and friction force, and are temporarily combined into a whole, when the screw rod provides and transmits tension force to the pull rod 42 to clamp a workpiece and process the workpiece, the rotary force rotator can rotate together with the machine tool spindle 41 until the processing is completed, and when the processing is completed, the second rotating base and the second clutch plate 352 are respectively formed into two relatively movable bodies with the machine tool spindle 41.
The specific working principle of the second clutch mechanism is as follows:
1. normally open structure
The flange of the end face of the bearing 311 near the middle part of the input end of the rotation force transmission aerodynamic force (torque) is fixedly connected with the second clutch plate 352 into a whole and is fixedly arranged on the bearing mounting seat 31. The second rotating seat 362 is sleeved and fixed on the middle part near the input end of the screw rod, so that the two can synchronously rotate, and a space of 0.3mm is also arranged between the end face of the second rotating seat 362 and the end face of the second clutch plate 352. The second magnetic holder 342 is fixedly mounted on the second mounting plate 25 so that it cannot rotate, nor does it rotate with the screw of the rotary actuator 2. When the second magnetic base 342 is energized to generate electromagnetic attraction, the end face of the second rotating base 362 and the end face of the second clutch plate 352 are attracted to each other (the distance is 0 at this time) to form an integral component, and the rotation sensor and the machine tool spindle 41 are temporarily coupled to form an integral body, so as to rotate synchronously along with the rotation of the machine tool spindle 41. When the second magnetic base 342 is powered off, the magnetic force disappears, the end face of the second rotating base 362 and the end face of the second clutch plate 352 recover to a distance of 0.3mm, and at this time, the two mutually independent actions do not affect each other, so that independent operation of the screw rod in the rotation force transmission part can be realized under the condition that the machine tool spindle 41 is stationary and different.
2. Normally closed structure
When the workpiece is machined, the first rotating seat 361 in the first clutch mechanism is powered off and separated from the first clutch plate 351, the second rotating seat 362 in the second clutch mechanism is powered off and sucked with the second clutch plate 352, so that the rotary force transmission part is connected with the machine tool spindle 41 into a whole, when the workpiece is machined, the first rotating seat 361 in the first clutch mechanism is powered on and sucked with the first clutch plate 351, and the second rotating seat 362 in the second clutch mechanism is powered on and separated from the second clutch plate 352 by 0.3mm distance, so that the rotary force transmitter 2 is temporarily disconnected from the machine tool spindle 41, and can independently operate.
Referring to fig. 2, the driving motor assembly 1 includes a motor 11, a speed reducer 12. The motor provides power for the movement of the screw rod of the rotary force transmitter 2; the speed reducer is arranged and fixed on the mounting plate, and is used for decelerating the power input by the motor, increasing the torque, transmitting and outputting the power to the screw rod connected with the speed reducer, and providing power for the rotation of the screw rod. In this embodiment, a planetary reducer is adopted, other types of reducer can be selected, and when the torque requirement is small, for example, when the workpiece is a fragile workpiece or a cutting condition requiring small clamping force, a reducing structure is not required, and the motor can be directly connected with the rotary force transmitter 2.
The machine tool main body 4 comprises a belt pulley, a belt pulley flange, a fixing bolt and a machine tool main shaft 41 mounting seat, wherein the belt pulley is fixedly connected with the machine tool main shaft 41 to provide power for high-speed rotation transmission of the main shaft 41; the pulley flange is used for installing and fixing the end face of the pulley as a transitional mounting part for installing the rotary force transmitter 2, the pulley flange is fixed on the bearing mounting seat 31, the fixing bolts are used for fixing the pulley flange on the pulley, and the machine tool main shaft 41 mounting seat is used for installing and positioning the machine tool main shaft 41.
The working process of the machine tool with the electric clamping system provided by the embodiment is as follows:
1. the first clutch mechanism and the second clutch mechanism are both normally open structures.
The cyclic processes of feeding clamping, processing completion and discharging to secondary feeding are as follows:
when the machine tool normally operates and the clamp is loosened to be fed: maintaining the first clutch mechanism to be electrified and absorbed and the second clutch mechanism to be disconnected, feeding (workpiece to be machined), rotating a motor (forward rotation), rotating a speed reducer, driving a screw rod to forward rotate, driving a screw rod nut to slide towards a screw rod input end, driving a pull rod 42 to pull backwards, driving a tool to clamp the workpiece, enabling the second clutch mechanism to be electrified and absorbed and the first clutch mechanism to be disconnected, enabling a machine tool main shaft 41 to rotate at a high speed to be matched with a cutter to finish machining, enabling the machine tool main shaft 41 to be stopped and fixedly moved, enabling the first clutch mechanism to be electrified and absorbed and enabling the second clutch mechanism to be disconnected, rotating the motor (reverse rotation), driving the screw rod to reversely rotate, driving the screw rod nut to slide towards the screw rod output end, driving the pull rod 42 to push forwards, driving the tool to loosen the workpiece, taking out the workpiece and installing the workpiece to be machined at the moment, and circulating;
2. the first clutch mechanism is of a normally open structure, and the second clutch mechanism is of a normally closed structure.
The cyclic processes of feeding clamping, processing completion and discharging to secondary feeding:
when the machine tool normally operates and the clamp is loosened to be fed: maintaining the first clutch mechanism to be electrified and absorbed and the second clutch mechanism to be electrified and separated, feeding (workpiece to be processed), rotating a motor (forward rotation), rotating a speed reducer, driving a screw rod to forward rotate, driving a screw rod nut to slide towards a screw rod input end, driving a pull rod 42 to pull backwards, driving a tool to clamp the workpiece, disconnecting the second clutch mechanism to be electrified and separated, enabling a machine tool main shaft 41 to rotate at a high speed to be matched with a cutter to finish processing, stopping a machine tool main shaft 41 to be fixedly moved, enabling the first clutch mechanism to be electrified and absorbed and enabling the second clutch mechanism to be electrified and separated, rotating the motor (reverse rotation), driving the screw rod to reversely rotate, driving the screw rod nut to slide towards the screw rod output end, driving the pull rod 42 to push forwards, driving the tool to loosen the workpiece, taking out the workpiece and installing the workpiece to be processed in such a way;
in this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to the terms "preferred embodiment," "further embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
Although embodiments of the present application have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the application, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the application.
Claims (10)
1. The machine tool with the electric clamping system is characterized by comprising a driving motor assembly, a rotary force transmitter, a machine tool main body and a chuck, wherein the machine tool main body comprises a pull rod and a main shaft, the rotary force transmitter is connected with the pull rod of the machine tool main body, the pull rod is used for driving clamping jaws of the chuck to open and close, the driving motor assembly and the rotary force transmitter can be in transmission connection or disconnection, and the rotary force transmitter and the main shaft of the machine tool main body can be in transmission connection or disconnection;
when a workpiece is required to be clamped or loosened, the driving motor assembly is in transmission connection with the rotary force transmitter, the rotary force transmitter is in transmission connection with a main shaft of the machine tool main body, and at the moment, the driving motor assembly can drive the pull rod to move forwards and backwards along the axial direction through the rotary force transmitter so as to open and close the clamping jaw of the chuck;
when a workpiece needs to be processed, the driving motor assembly is separated from transmission connection with the rotary force transmitter, the rotary force transmitter is in transmission connection with a main shaft of the machine tool main body, and when the main shaft of the machine tool main body rotates, the clamping jaw of the chuck is driven to rotate.
2. A machine tool having an electric gripping system according to claim 1, wherein the drive motor assembly is drivingly connected to or disconnected from the rotary force transmitter by a first clutch mechanism and the rotary force transmitter is drivingly connected to or disconnected from the spindle of the machine tool body by a second clutch mechanism.
3. A machine tool having an electric clamping system according to claim 2 wherein the first and second clutch mechanisms each comprise a magnetic mount and a clutch member that is connectable to and disconnectable from each other, the clutch member being controlled to be connected or disconnected by energizing or de-energizing the magnetic mount.
4. A machine tool having an electric clamping system according to claim 2 wherein the rotary force transmitter includes a mounting plate and a screw extending through the mounting plate, the magnetic mounts being secured to respective sides of the mounting plate and not moving with the rotary force transmitter.
5. A machine tool having an electric clamping system according to claim 2 wherein the first clutch mechanism is mounted to the input of the rotary force transmitter and the second clutch mechanism is mounted to the input of the rotary force transmitter in a central position.
6. The machine tool with the electric clamping system according to claim 1, wherein the rotary force transmitter comprises a screw rod, the driving motor assembly and the screw rod are in transmission connection or disconnection through a first clutch mechanism, the first clutch mechanism comprises a first clutch plate, a first rotating seat and a first magnetic seat, the first clutch plate is fixed on the driving motor assembly, the first rotating seat is sleeved on the screw rod of the rotary force transmitter and can rotate along with the screw rod, and the first magnetic seat can enable the first clutch plate to be in transmission connection with the first rotating seat, so that the driving motor assembly and the screw rod can be in transmission connection.
7. A machine tool having an electric clamping system according to claim 6 wherein the first clutch plate and the first rotary seat have a spacing of 0.1-1mm therebetween after the first clutch plate is disconnected from the first rotary seat.
8. The machine tool with the electric clamping system according to claim 1, wherein the rotary force transmitter is in transmission connection with or separated from a main shaft of the machine tool body through a second clutch mechanism, the second clutch mechanism comprises a second clutch plate, a second rotating seat and a second magnetic seat, the second clutch plate is connected with the main shaft of the machine tool body through a flange plate, the second rotating seat is sleeved on the screw rod of the rotary force transmitter and can rotate along with the screw rod, and when the second magnetic seat is electrified or de-electrified, the second clutch plate is attracted with the second rotating seat to enable the rotary force transmitter to be in transmission connection with the main shaft of the machine tool body.
9. A machine tool having an electric clamping system according to claim 8 wherein said second clutch plate has a spacing of 0.1-1mm from said second rotary seat after said second clutch plate is disconnected from said second rotary seat.
10. A machine tool having an electric clamping system according to claim 1 wherein the machine tool body includes a pulley fixedly coupled to the machine tool spindle and a pulley flange for mounting the rotary force transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311685308.XA CN117620240A (en) | 2023-12-08 | 2023-12-08 | Machine tool with electric clamping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311685308.XA CN117620240A (en) | 2023-12-08 | 2023-12-08 | Machine tool with electric clamping system |
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| Publication Number | Publication Date |
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| CN117620240A true CN117620240A (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311685308.XA Pending CN117620240A (en) | 2023-12-08 | 2023-12-08 | Machine tool with electric clamping system |
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