A frameless motor fixing device for a numerical control machine tool

Abstract

The present invention discloses a frameless motor fixing device for a numerical control machine tool, which is arranged in an installation clamping hole opened on the numerical control machine tool and includes: a motor rotating shaft, a motor housing, a supporting device and a clamping mechanism. A bottom plate is provided on the motor housing, the bottom plate is connected to the supporting device, the supporting device is arranged in the clamping mechanism, and the motor rotating shaft is inserted into the motor housing. By pushing the bottom plate, the bottom plate drives the supporting device to deform, and the motor housing is fixed. For this frameless motor fixing device of the numerical control machine tool, the supporting device and the clamping mechanism cooperate, and can be adaptively adjusted according to the size and shape of the installation clamping hole, which can not only meet the high-precision installation requirements of customized frameless motors, but also solve the problem of low adaptability of non-customized frameless motors to a certain extent, and improve the versatility of the device for different types of frameless motors.

Description

Technical Field

[0001] The present invention relates to the technical field of frameless motor installation, and specifically to a fixing device for a frameless motor of a numerical control machine tool. Background Technique

[0002] A frameless motor, also known as a frameless torque motor, is a frameless permanent magnet motor, which is divided into an inner rotor and an outer rotor. In the fields of numerical control machine tools and precision manufacturing, its high-precision and high-dynamic response characteristics can improve processing efficiency and product quality, meeting the requirements of complex processing tasks.

[0003] For a frameless motor customized according to user requirements, the installation adaptability is high, but the production cost of the motor is relatively large, the efficiency is low, and the daily maintenance is also relatively troublesome, and the installation process is relatively cumbersome. While a non-customized frameless motor is cheap, but the adaptability is low and it cannot meet the user's needs. Summary of the Invention

[0004] The purpose of the present invention is to provide a fixing device for a frameless motor of a numerical control machine tool to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A fixing device for a frameless motor of a numerical control machine tool is arranged in an installation clamping hole opened on the numerical control machine tool, and includes:

[0006] A motor shaft, a motor housing, a support device, and a clamping mechanism;

[0007] A bottom plate is provided on the motor housing, and the bottom plate is connected to the support device;

[0008] The support device is arranged in the clamping mechanism;

[0009] The motor shaft is inserted into the motor housing, pushing the bottom plate, and the bottom plate drives the support device to deform, fixing the motor housing.

[0010] Preferably, a connecting rod is provided on the bottom plate, and a coil is provided at one end of the connecting rod;

[0011] A bearing hole is opened on the motor housing, and a magnet is arranged in the bearing hole. The magnet attracts the coil, pulls the bottom plate, and the bottom plate limits the motor shaft.

[0012] Preferably, a plug hole is opened on the bottom plate;

[0013] One end of the motor shaft is provided with a plug shaft, the plug shaft is inserted into the plug hole, and a pressure bearing is further arranged on one side of the bottom plate. The pressure bearing contacts one end of the motor shaft to reduce the friction of the bottom plate on the motor shaft.

[0014] Preferably, a traction rope included in the support device is connected to the bottom plate. The support device further includes a rotating shaft sleeve connected to one end of the traction rope. A clamping claw is provided on the rotating shaft sleeve, and the clamping claw cooperates with the clamping mechanism for clamping.

[0015] The support device further includes a first rotating shaft, a second rotating shaft, a third rotating shaft, and a fourth rotating shaft provided on the rotating shaft sleeve.

[0016] The first rotating shaft connects the connecting plate and the clamping claw. The second rotating shaft connects the support forearm and the connecting plate. The third rotating shaft connects the support upper arm and the support forearm. The fourth rotating shaft connects the support upper arm and the rotating shaft carrier plate.

[0017] Preferably, the clamping mechanism includes a bearing platform and a clamping groove opened on the motor housing.

[0018] The bearing platform is used to fix the rotating shaft carrier plate.

[0019] A sliding groove is further opened in the clamping groove, and a clamping block is provided at the bottom of the clamping mechanism.

[0020] A limiting rod is opened on the clamping claw, and the limiting rod is inserted into the sliding groove, and the clamping claw is clamped in the clamping block.

[0021] Preferably, sliding sleeves are provided on both the support forearm and the support upper arm, and the sliding sleeves are used to limit the traction rope.

[0022] A through hole is further opened on the support upper arm, and the traction rope passes through the through hole and is connected to the bottom plate.

[0023] Preferably, the number of the support devices and the clamping mechanisms is at least two.

[0024] Preferably, a ventilation hole is opened at one end of the bearing hole, and the ventilation hole ventilates into the motor housing.

[0025] Preferably, a knurled groove is opened on the motor rotating shaft, and the knurled groove is strengthened when inserted into the motor housing to increase the rotation force.

[0026] Preferably, an installation groove is opened on the installation clamping hole, and the size of the installation groove matches the size of the support device. The support device supports in the installation groove to fix the motor housing.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] For the frameless motor fixing device of this numerical control machine tool, the support device and the clamping mechanism cooperate, and can be adaptively adjusted according to the size and shape of the installation clamping hole, which can not only meet the high-precision installation requirements of customized frameless motors, but also solve the problem of low adaptability of non-customized frameless motors to a certain extent, and improve the versatility of the device for different types of frameless motors.

[0029] The frameless motor fixing device, support device and clamping mechanism of this numerical control machine tool have at least two in number, and are interconnected through components such as rotating shafts and connecting plates to form a stable support structure, which can effectively resist the vibration and torque generated during the operation of the motor, ensure the stable and reliable operation of the motor during the working process, reduce the machining errors caused by loosening, and improve the machining accuracy and product quality.

[0030] The frameless motor fixing device of this numerical control machine tool has a relatively simple structure, and the connection of each component is clear. When the motor needs to be maintained, it is easy to assemble, reducing the difficulty and cost of daily maintenance and improving the maintainability of the equipment. Description of the Drawings

[0031] Figure 1 Schematic diagram of the overall structure of the present invention;

[0032] Figure 2 Schematic diagram of the motor structure of the present invention;

[0033] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at A in the present invention;

[0034] Figure 4 Schematic diagram of the structure of the present invention with the motor rotating shaft removed;

[0035] Figure 5 Schematic diagram of the structure of the motor housing of the present invention;

[0036] Figure 6 For the present invention Figure 5 Enlarged schematic diagram of the structure at B in the present invention;

[0037] Figure 7 Schematic diagram of the bottom plate structure of the present invention;

[0038] Figure 8 Schematic diagram of the structure of the support device of the present invention;

[0039] Figure 9 Schematic diagram of the magnetized state of the coil of the present invention;

[0040] Figure 10 Schematic diagram of the non-magnetized state of the coil of the present invention.

[0041] In the figure: 1. CNC machine tool; 11. Installation and clamping hole; 2. Motor rotating shaft; 21. Knurled groove; 22. Insertion shaft; 3. Motor housing; 31. Bottom plate; 311. Pressure bearing; 312. Connecting rod; 313. Coil; 314. Magnet; 315. Insertion hole; 32. Vent hole; 33. Bearing hole; 4. Support device; 41. Clamping claw; 42. Limiting rod; 43. First rotating shaft; 45. Rotating shaft sleeve; 44. Second rotating shaft; 46. Connecting plate; 47. Support small arm; 48. Traction rope; 49. Sliding sleeve; 410. Third rotating shaft; 411. Support large arm; 412. Fourth rotating shaft; 413. Through hole; 414. Rotating bearing plate; 5. Clamping mechanism; 51. Bearing platform; 52. Clamping groove; 53. Sliding groove; 54. Clamping block. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a frameless motor fixing device for a CNC machine tool, which is arranged in the installation and clamping hole 11 opened on the CNC machine tool 1. An installation groove is opened on the installation and clamping hole 11, and the size of the installation groove matches the size of the support device 4. The support device 4 is supported in the installation groove to fix the motor housing 3. The installation and clamping hole 11 is used to accommodate the entire motor and the motor rotating shaft 2, and the installation groove is used to accommodate the support device 4. After the support device 4 is supported, it abuts against the installation groove, thereby fixing the entire motor. It includes: a motor rotating shaft 2, a motor housing 3, a support device 4, and a clamping mechanism 5. A bottom plate 31 is provided on the motor housing 3. When the bottom plate 31 is pushed backward by the motor rotating shaft 2, the traction rope 48 can be pulled, thereby pulling up the entire support device 4 and expanding the overall size of the motor housing 3, so that the motor can be fixed in the installation and clamping hole 11. The bottom plate 31 is connected to the support device 4 and the traction rope 48. When the bottom plate 31 moves backward, the support device 4 can be deformed by the traction rope 48, so that the support device 4 reaches a raised state, thereby being able to abut against the installation groove, thereby fixing the non-customized single-direction inner-rotor frameless torque motor. The support device 4 is arranged in the clamping mechanism 5, and the clamping mechanism 5 is used to clamp the support device 4, thereby ensuring that the support device 4 will not become loose during the use state of the motor after installation. The motor rotating shaft 2 is inserted into the motor housing 3, the bottom plate 31 is pushed, the bottom plate 31 drives the support device 4 to deform, and the motor housing 3 is fixed.

[0044] A mounting and clamping hole 11 is provided on the numerical control machine tool 1, and an installation groove matching the size of the support device 4 is arranged inside it. During installation, first insert the motor shaft 2 into the motor housing 3. The bottom plate 31 connected to the motor housing 3 is connected to the support device 4 through a traction rope 48, and the support device 4 is installed in the clamping mechanism 5. Then, place the whole motor into the mounting and clamping hole 11, push the motor shaft 2 to make it move inside the motor housing 3 and press against the bottom plate 31. After the bottom plate 31 is stressed, it pulls the traction rope 48, and the traction rope 48 drives the support device 4 to deform, changing from a contracted state to a raised state, closely fitting with the installation groove, and resisting against the inner wall of the installation groove, thereby fixing the motor housing 3. At the same time, the clamping mechanism 5 clamps the support device 4 to prevent it from loosening. When the motor is powered on and running, the motor shaft 2 rotates to drive the motor to output power, and the support device 4 maintains the fixed position of the motor, resisting vibration and torque. If maintenance is required, first release the clamping of the support device 4 by the clamping mechanism 5, move the motor shaft 2 in the reverse direction to make the support device 4 return to its initial state, and then the motor can be taken out. After maintenance, reinstall it according to the steps again.

[0045] As Figure 2 、 Figure 4 、 Figure 7 shown, a connecting rod 312 is provided on the bottom plate 31. The connecting rod 312 is used to connect the coil 313 and the bottom plate 31 to ensure that when the coil 313 is attracted by the magnet 314, it can drive the bottom plate 31 to move synchronously towards the motor direction. A coil 313 is provided at one end of the connecting rod 312. Referring to Figure 9 shown, when the motor starts, a magnetic field will be generated inside the motor. The magnetic field cuts the magnetic induction lines and the Helmholtz array with the coil 313, and the coil 313 will generate a magnetic field opposite to that of the magnet 314. The magnet 314 will attract the coil 313, and the bottom plate 31 will have an inward force to squeeze the motor shaft 2 towards the motor housing 3 direction. As Figure 8 shown, when the motor is not working, the coil 313 will not generate a magnetic field. The magnet 314 will still attract the coil 313, but the attraction force is not as strong as when the motor starts. It is mainly used to reset the bottom plate 31 to fit against the motor housing 3. A bearing hole 33 is provided on the motor housing 3. A magnet 314 is provided at the bottom of the bearing hole 33, and the coil 313 is inserted into the bearing hole 33 through the connecting rod 312. A magnet 314 is provided in the bearing hole 33. The magnet 314 is mainly used to attract the coil 313. The magnet 314 attracts the coil 313, pulls the bottom plate 31, and the bottom plate 31 limits the motor shaft 2.

[0046] As Figure 7A connecting rod 312 is provided on the shown base plate 31. The other end of the connecting rod 312 is connected to a coil 313. A bearing hole 33 is formed on the motor housing 3, and a magnet 314 is provided at the bottom of the hole. The coil 313 is inserted into the bearing hole 33 through the connecting rod 312. When the motor is not started, the coil 313 does not generate a magnetic field, and the magnet 314 has a weak attraction to it. After the motor is started, a magnetic field is generated inside the motor. This magnetic field cuts the magnetic induction lines and the Helmholtz array with the coil 313, causing the coil 313 to generate a magnetic field opposite to that of the magnet 314. At this time, the attraction of the magnet 314 to the coil 313 is enhanced, and the base plate 31 is pulled through the connecting rod 312. Since the base plate 31 is related to the motor rotating shaft 2, it further plays a limiting role on the motor rotating shaft 2, thereby affecting the state of the rotating shaft during the operation of the motor and ensuring the stable operation of the motor.

[0047] As Figure 2 , Figure 4 shown, a plug hole 315 is formed on the base plate 31. The size of the plug hole 315 matches the size of the plug shaft 22 for the plug shaft 22 to be inserted, so that the connection between the base plate 31 and the motor rotating shaft 2 is in contact at one end of the plug shaft 22. One end of the motor rotating shaft 2 is provided with a plug shaft 22, and the plug shaft 22 is used to be inserted into the plug hole 315 for positioning the base plate 31 to prevent the base plate 31 from shifting during operation. The plug shaft 22 is inserted into the plug hole 315. A pressure bearing 311 is also provided on one side of the base plate 31. The pressure bearing 311 is used to reduce the friction of the motor rotating shaft 2 and prevent the motor rotating shaft 2 from being worn due to long-term use. The pressure bearing 311 contacts one end of the motor rotating shaft 2 to reduce the friction of the base plate 31 on the motor rotating shaft 2.

[0048] As Figure 2 shown, one end of the motor rotating shaft 2 is provided with a plug shaft 22, and a plug hole 315 with a matching size is formed on the base plate 31. During installation, the plug shaft 22 is inserted into the plug hole 315 to realize the connection between the motor rotating shaft 2 and the base plate 31, and at the same time play a role in positioning the base plate 31 to prevent the base plate 31 from shifting due to force during motor operation. During the operation of the motor, the motor rotating shaft 2 rotates continuously. Since the base plate 31 is closely connected to the motor rotating shaft 2 and there is a relative motion tendency between them, at this time, the pressure bearing 311 provided on one side of the base plate 31 plays a role. It contacts one end of the motor rotating shaft 2, effectively reducing the friction of the base plate 31 on the motor rotating shaft 2, avoiding excessive wear of the motor rotating shaft 2 due to long-term use, ensuring that the motor rotating shaft 2 can rotate stably and smoothly, and guaranteeing the normal operation of the motor.

[0049] As shown in Figure 8, a traction rope 48 included in the support device 4 is connected to the bottom plate 31. One end of the traction rope 48 is connected to the clamping claw 41, and the other end of the traction rope 48 is connected to the bottom plate 31. When the bottom plate 31 moves backward, it will pull the traction rope 48, thereby pulling the clamping claw 41 to move in the direction of the bottom plate 31, making the entire support device 4 subject to a tensile force, so as to reach a deformed and raised state. The support device 4 further includes a rotating shaft sleeve 45 connected to one end of the traction rope 48. The rotating shaft sleeve 45 is used to connect to the first rotating shaft 43, ensuring that the clamping claw 41 can closely adhere to the clamping mechanism 5 and will not be affected by the pulling force, resulting in the end of the clamping claw 41 being out of the control of the clamping mechanism 5. The rotating shaft sleeve 45 is provided with a clamping claw 41. One end of the clamping claw 41 is provided with an inclined plane, so as to better clamp the clamping block 54, ensuring that after the bottom plate 31 moves backward, it will not naturally return to the initial position, resulting in a decrease in the raised height, causing the motor housing 3 to have no support and resulting in unstable connection during operation. The clamping claw 41 and the clamping mechanism 5 cooperate for clamping. The support device 4 further includes a first rotating shaft 43, a second rotating shaft 44, a third rotating shaft 410, and a fourth rotating shaft 412 provided on the rotating shaft sleeve 45. The first rotating shaft 43 connects the connecting plate 46 and the clamping claw 41. The first rotating shaft 43 connects the clamping claw 41 and the connecting plate 46. The function of the connecting plate 46 is to adapt to the angle formed by the traction of the support small arm 47 and the clamping claw 41. The second rotating shaft 44 connects the support small arm 47 and the connecting plate 46. The support small arm 47 is used to cooperate with the support large arm 411. The installation groove is supported by the third rotating shaft 410 to fix the entire motor. The third rotating shaft 410 connects the support large arm 411 and the support small arm 47. The fourth rotating shaft 412 connects the support large arm 411 and the rotating bearing plate 414. The fourth rotating shaft 412 is used to allow the support large arm 411 to rotate when being pulled, so as to reach a state of cooperating with the support small arm 47.

[0050] As Figure 8The shown bottom plate 31 is connected to the towing rope 48 in the support device 4. One end of the towing rope 48 is connected to the clamping claw 41, and the other end is connected to the bottom plate 31. When the motor rotating shaft 2 pushes the bottom plate 31 to move backward, the bottom plate 31 towes the towing rope 48, and then pulls the clamping claw 41 to move towards the bottom plate 31, causing the entire support device 4 to be deformed and bulged under tension. The rotating shaft sleeve 45 in the support device 4 is connected to one end of the towing rope 48 and is also connected to the first rotating shaft 43, ensuring that the clamping claw 41 is closely attached to the clamping mechanism 5 to prevent the end of the clamping claw 41 from being out of the control of the clamping mechanism 5 due to force. One end of the clamping claw 41 is an inclined plane, which is convenient for tightly clamping with the clamping block 54 to prevent the bottom plate 31 from resetting naturally and ensure the stable support of the motor housing 3. The first rotating shaft 43 connects the clamping claw 41 and the connecting plate 46, and the connecting plate 46 can adapt to the angle formed by the traction of the supporting small arm 47 and the clamping claw 41. The second rotating shaft 44 connects the supporting small arm 47 and the connecting plate 46, and the supporting small arm 47 and the supporting large arm 411 are connected by a third rotating shaft 410. Under the action of the tension of the towing rope 48, the supporting small arm 47 and the supporting large arm 411 rotate and bulge with the third rotating shaft 410 as the axis, and are closely attached to the installation groove to support and fix the entire motor. The fourth rotating shaft 412 connects the supporting large arm 411 and the rotating bearing carrier plate 414, enabling the supporting large arm 411 to rotate when being towed and cooperating with the supporting small arm 47 to complete the stable support and fixation of the motor.

[0051] As Figure 6 shown, the clamping mechanism 5 includes a bearing platform 51 and a clamping groove 52 opened on the motor housing 3. The bearing platform 51 is used to support the rotating bearing carrier plate 414. The rotating bearing carrier plate 414 is used to be connected through the fourth rotating shaft 412 and the supporting large arm 411. The fourth rotating shaft 412 is used to ensure that the supporting large arm 411 can rotate on the rotating bearing carrier plate 414. The bearing platform 51 is used to fix the rotating bearing carrier plate 414. A sliding groove 53 is also opened in the clamping groove 52. The sliding groove 53 is used to accommodate the support device 4 and is also used to set the clamping block 54 therein. The bottom of the clamping mechanism 5 is provided with the clamping block 54. The clamping block 54 is used to fix the entire support device 4 through the clamping of the clamping claw 41. A limiting rod 42 is opened on the clamping claw 41. The limiting rod 42 is arranged in the sliding groove 53 and is used to limit the clamping claw 41 to prevent the clamping claw 41 from detaching from the clamping groove 52 when being towed and not being clamped with the sliding groove 53, thus failing to fix the bulged support device 4 in a state. The limiting rod 42 is inserted into the sliding groove 53 so that the limiting rod 42 can slide in the sliding groove 53, and the clamping claw 41 is clamped in the clamping block 54.

[0052] As Figure 6As shown, the clamping mechanism 5 is composed of a bearing platform 51 and a clamping groove 52 provided on the motor housing 3. The bearing platform 51 supports the rotating shaft bearing plate 414, and the rotating shaft bearing plate 414 is connected to the supporting arm 411 through the fourth rotating shaft 412. The fourth rotating shaft 412 enables the supporting arm 411 to rotate on the rotating shaft bearing plate 414, and the bearing platform 51 fixes the rotating shaft bearing plate 414. A sliding groove 53 is provided in the clamping groove 52, which not only accommodates the supporting device 4, but also provides a clamping block 54. The clamping block 54 at the bottom of the clamping mechanism 5 is clamped with the clamping claw 41 to fix the entire supporting device 4. The limiting rod 42 on the engaging claw 41 is located in the slide groove 53. When the supporting device 4 is pulled, the limiting rod 42 slides in the slide groove 53 to limit the position of the engaging claw 41 and prevent it from being separated from the engaging groove 52, thereby ensuring that the engaging claw 41 is stably engaged with the engaging block 54, thereby fixing the supporting device 4 in the raised state and ensuring that the supporting device 4 will not loosen during the operation of the motor, thereby maintaining the stable fixation of the motor.

[0053] like Figure 8 As shown, a sleeve 49 is provided on the supporting arm 47 and the supporting arm 411, and the sleeve 49 is used to limit the traction rope 48 to ensure that the traction rope 48 can be limited by the sleeve 49 when being pulled, and the installation position of the sleeve 49 is at the farthest end of the supporting arm 47 and the supporting arm 411, and the supporting arm 47 and the supporting arm 411 can be raised by pulling, and the sleeve 49 is used to limit the traction rope 48. A through hole 413 is also provided on the supporting arm 411, and the through hole 413 allows the supporting arm 411 to rotate upward better, and the traction rope 48 passes through the through hole 413 and is connected to the bottom plate 31.

[0054] The farthest ends of the supporting small arm 47 and the supporting large arm 411 are both installed with a sliding sleeve 49, through which the traction rope 48 passes. When the bottom plate 31 is forced to move backward and pull the traction rope 48, the sliding sleeve 49 limits the traction rope 48, ensuring that the pulling force direction of the traction rope 48 is stable and transmitted along a predetermined path. Under the pulling force of the traction rope 48, the supporting small arm 47 and the supporting large arm 411 rotate and bulge around the corresponding rotating shaft. A through hole 413 is provided on the supporting large arm 411, and the traction rope 48 passes through the through hole 413 to connect with the bottom plate 31. The through hole 413 provides space for the supporting large arm 411 when it rotates upward, reducing the obstruction of the traction rope 48 to its rotation, so that the supporting large arm 411 can rotate more smoothly, and cooperate with the supporting small arm 47 to complete the support and fixation of the motor.

[0055] The number of the supporting devices 4 and the clamping mechanisms 5 is at least two, specifically fifteen, and they are arranged on the motor housing 3 in a circular array to support and fix the motor housing 3 from all directions.

[0056] One end of the bearing hole 33 is provided with a ventilation hole 32, which ventilates the motor housing 3 and is also used for cooling the inside of the motor.

[0057] Knurled grooves 21 are provided on the motor shaft 2, and the knurled grooves 21 are strengthened when inserted into the motor housing 3 to increase the rotation force.

[0058] When the frameless motor fixing device of the numerical control machine tool is in use, installation clamping holes 11 and matching installation grooves are provided on the numerical control machine tool 1. The motor shaft 2 is inserted into the motor housing 3. The bottom plate 31 on the motor housing 3 is connected to the support device 4 through a traction rope 48, and the support device 4 is installed on the clamping mechanism 5. During installation, the motor shaft 2 is pushed against the bottom plate 31, and the bottom plate 31 moves backward to pull the traction rope 48, causing the support device 4 to change from a contracted state to a raised state. Its various components are connected by a rotating shaft to change shape and fit tightly with the installation groove to fix the motor housing 3. At the same time, the clamping block 54 of the clamping mechanism 5 is clamped with the clamping claw 41, and the limiting rod 42 is limited in the sliding groove 53 to prevent the support device 4 from loosening. The motor housing 3 is installed in the numerical control machine tool 1 during the process of inserting the motor shaft 2. The sliding sleeves 49 on the support forearm 47 and the support big arm 411 limit the traction rope 48, and the through hole 413 facilitates the rotation of the support big arm 411. The two cooperate to complete the support. When the motor runs, the motor shaft 2 rotates to output power, and the support device 4 maintains the fixation of the motor and resists vibration and torque. When the motor starts, the magnetic field inside the motor cuts the coil 313 to generate an opposite magnetic field. The magnet 314 attracts the coil 313, and the bottom plate 31 is pulled through the connecting rod 312 to limit the motor shaft 2. When not started, the magnet 314 weakly attracts the coil 313 to reset the bottom plate 31. The insertion shaft 22 of the motor shaft 2 is inserted into the insertion hole 315 of the bottom plate 31 for positioning, and the pressure bearing 311 reduces the friction between the two. The support device 4 and the clamping mechanism 5 are distributed in an annular array to fix the motor. The ventilation hole 32 ventilates and cools, and the knurled grooves 21 enhance the rotation force of the motor shaft 2.

[0059] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A frameless motor fixing device for a numerically controlled machine tool, arranged in a mounting clamping hole (11) provided on the numerically controlled machine tool (1), characterized in that: include: A motor shaft (2), a motor housing (3), a supporting device (4) and a clamping mechanism (5); The motor housing (3) is provided with a bottom plate (31), and the bottom plate (31) is connected to the supporting device (4); The supporting device (4) is arranged in the clamping mechanism (5); The motor shaft (2) is inserted into the motor housing (3), pushing the bottom plate (31), and the bottom plate (31) drives the support device (4) to deform, thereby fixing the motor housing (3); A connecting rod (312) is provided on the bottom plate (31), and a coil (313) is provided on one end of the connecting rod (312); A bearing hole (33) is provided on the motor housing (3), a magnet (314) is provided in the bearing hole (33), the magnet (314) attracts the coil (313) and pulls the bottom plate (31), and the bottom plate (31) limits the motor shaft (2); The bottom plate (31) is provided with a plug-in hole (315); A plug-in shaft (22) is provided at one end of the motor shaft (2), and the plug-in shaft (22) is plugged into the plug-in hole (315). A pressure bearing (311) is also provided on one side of the base plate (31). The pressure bearing (311) is in contact with one end of the motor shaft (2) to reduce the friction of the base plate (31) on the motor shaft (2). The base plate (31) is connected to a traction rope (48) included in the support device (4). The support device (4) also includes a shaft sleeve (45) connected to one end of the traction rope (48). A clamping claw (41) is provided on the shaft sleeve (45). The clamping claw (41) and the clamping mechanism (5) are clamped in cooperation. The supporting device (4) further comprises a first rotating shaft (43), a second rotating shaft (44), a third rotating shaft (410) and a fourth rotating shaft (412) which are arranged on the rotating shaft sleeve (45); The first rotating shaft (43) connects the connecting plate (46) and the clamping claw (41), the second rotating shaft (44) connects the supporting small arm (47) and the connecting plate (46), the third rotating shaft (410) connects the supporting large arm (411) and the supporting small arm (47), and the fourth rotating shaft (412) connects the supporting large arm (411) and the rotating shaft bearing plate (414).

2. The frameless motor fixing device for a CNC machine tool according to claim 1, characterized in that: The clamping mechanism (5) comprises a bearing platform (51) and a clamping groove (52) provided on the motor housing (3); The bearing platform (51) is used to fix the rotating shaft bearing plate (414); A sliding groove (53) is also provided in the clamping groove (52), and a clamping block (54) is provided at the bottom of the clamping mechanism (5); A limit rod (42) is provided on the clamping claw (41), the limit rod (42) is inserted into the sliding groove (53), and the clamping claw (41) is clamped into the clamping block (54).

3. The frameless motor fixing device for a CNC machine tool according to claim 1, characterized in that: The supporting small arm (47) and the supporting large arm (411) are both provided with a sliding sleeve (49), and the sliding sleeve (49) is used to limit the position of the traction rope (48); The supporting arm (411) is also provided with a through hole (413), and the traction rope (48) passes through the through hole (413) and is connected to the bottom plate (31).

4. A frameless motor fixing device for a CNC machine tool according to claim 1 or 2, characterized in that: The number of the supporting devices (4) and the clamping mechanisms (5) is at least two.

5. The frameless motor fixing device for a CNC machine tool according to claim 1, characterized in that: A vent hole (32) is provided at one end of the bearing hole (33), and the vent hole (32) is ventilated into the motor housing (3).

6. The frameless motor fixing device for a CNC machine tool according to claim 1, characterized in that: The motor shaft (2) is provided with a knurled groove (21), and the knurled groove (21) strengthens the rotation force when plugged into the motor housing (3).

7. The frameless motor fixing device for a CNC machine tool according to claim 1, characterized in that: The mounting clamping hole (11) is provided with a mounting groove, the size of which matches the size of the supporting device (4), and the supporting device (4) is supported in the mounting groove to fix the motor housing (3).

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