Spindle box structure of high-power direct-drive motor

Abstract

The invention relates to the technical field of spindle box structures, and discloses a high-power direct-drive motor spindle box structure which comprises a motor outer stator, the interior of the motor outer stator is communicated with a body, a protective shell is fixedly assembled on the inner wall of the body, and a first fastening bolt is arranged on the outer wall of the body. According to the spindle box structure, the motor outer stator, the body, the rotating shaft, the brake calipers and the brake disc are arranged, so that in the operation process of the spindle box structure, the motor outer stator is directly connected with the spindle box through the rotating shaft, and the brake disc and the brake calipers can guarantee the connection stability of the rotating shaft and the spindle box; according to the spindle box structure, the rotating shaft serves as the motor inner stator, the rotating shaft rotates when the motor rotor rotates, so that indexing of the rotating shaft is more accurate, errors generated in the transmission process are avoided, the motor torque is directly transmitted to the rotating shaft, the rotating shaft torque is large, intermediate torque consumption is avoided, and the practicability and the power performance of the spindle box structure are improved.

Description

Technical Field

[0001] The invention relates to the technical field of spindle box structures, and in particular to a high-power direct-drive motor spindle box structure. Background Art

[0002] The spindle box is an important component of the machine tool. It is used to arrange the machine tool working spindle and its transmission parts and corresponding additional mechanisms. The spindle box is a complex transmission component, including the spindle assembly, reversing mechanism, transmission mechanism, braking device, operating mechanism and lubrication device.

[0003] The existing machine tool spindle box drive structure has a motor and a spindle connected to the spindle through a coupling, and also has a pulley and a belt connected to the spindle to transmit the motor torque to the spindle. The structure is bulky, the efficiency is lost, the floor space is large, and the vibration generated by the motor will affect the accuracy of the machine tool. For this reason, we propose a high-power direct-drive motor spindle box structure. Summary of the invention

[0004] The present invention provides a high-power direct-drive motor spindle box structure, which has the advantages of small footprint, high transmission efficiency, automatic monitoring of the operating status of the spindle box structure, and high intelligence, and solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a high-power direct-drive motor spindle box structure, comprising a motor outer stator, the interior of the motor outer stator is connected to a body, the inner wall of the body is fixedly equipped with a protective shell, the outer wall of the body is provided with a fastening bolt, the inner wall of the motor outer stator is fixedly equipped with a positioning shell, the inner wall of the positioning shell is provided with a movable groove, the inner wall of the movable groove is provided with a rolling groove, the inner wall of the movable groove is fixedly equipped with a connecting shell, the outer wall of the connecting shell is fixedly equipped with a limit rod, the outer wall of the limit rod is rotatably connected to a large ball, the inner wall of the connecting shell is fixedly equipped with a connecting rod, and the outer wall of the connecting rod is rotatably connected to A small ball is connected, a rotating groove is opened in the middle of the large ball, an infrared transmitter is fixedly installed on the inner wall of the rotating groove, a mounting groove 2 is opened on the outer wall of the limit rod, an infrared receiver is fixedly installed on the inner wall of the mounting groove 2, the outer walls of the large ball and the small ball are both rollingly connected with a rotating shaft, a mounting plate is fixedly installed at one end of the outer stator of the motor away from the body, a mounting groove 1 is opened in the middle of the mounting plate, a brake caliper is provided on the inner wall of the mounting groove 1, a brake disc is provided on the outer wall of the brake caliper, two fastening bolts are provided between the outer stator of the motor and the protective shell, and a warning light and a controller are fixedly installed on the outer walls of the connecting shell.

[0006] As a preferred technical solution of the present invention: the protective shell is fixedly connected to the outer stator of the motor through two fastening bolts, and the positioning shell is fixedly connected to the outer stator of the motor through the protective shell, and the inner wall of the rolling groove is rollingly connected to the outer wall of the large ball.

[0007] As a preferred technical solution of the present invention: the number of the large balls is several, the several large balls are divided into several groups, and the several groups are evenly distributed along the inner wall of the positioning shell.

[0008] As a preferred technical solution of the present invention: the rotating slot is electrically connected to the infrared receiver, and the controller is electrically connected to the prompt light, the rotating slot and the infrared receiver respectively.

[0009] As a preferred technical solution of the present invention: the outer wall of the small ball is rollingly connected to the inner wall of the connecting shell, and the large ball and the small ball are both made of 304 stainless steel.

[0010] As a preferred technical solution of the present invention: the outer stator of the motor is fixedly connected to the body by a fastening bolt, and the rotating shaft is fixedly connected to the positioning shell when the outer wall of the brake disc is in contact with the outer wall of the rotating shaft.

[0011] As a preferred technical solution of the present invention: the position of the infrared receiver corresponds to the position of the infrared transmitter, and a plurality of the connecting shells are fixed to each other by a limiting rod.

[0012] As a preferred technical solution of the present invention: the main body is connected to the outer stator of the motor through a rotating shaft, and the rotating shaft and the positioning shell are both made of Q235 stainless steel.

[0013] The present invention has the following beneficial effects: 1. The high-power direct-drive motor spindle box structure, through the motor outer stator, body, rotating shaft, brake caliper, and brake disc structure, enables the spindle box structure to directly connect the motor outer stator with the spindle box using the rotating shaft during operation, and the brake disc and brake caliper can ensure the stability of the connection between the rotating shaft and the spindle box. When the rotating shaft is driven to rotate by the spindle box, the rotating shaft serves as the inner stator of the motor, and the rotation of the motor rotor means the rotation of the rotating shaft, thereby making the indexing of the rotating shaft more accurate, without errors generated during the transmission process, and the motor torque is directly transmitted to the rotating shaft, the rotating shaft torque is large, and there is no intermediate torque consumption, thereby improving the practicality and power performance of the spindle box structure.

[0014] 2. The high-power direct-drive motor spindle box structure is equipped with large balls, small balls, limit rods, warning lights, controllers, infrared transmitters, and infrared receivers. During the rolling of the large balls, the infrared transmitter will overlap with the infrared receiver once every time the shaft rotates one circle. The state of the large balls is monitored by monitoring the time taken for the two to overlap, so that users can detect faults in the spindle box structure in a timely manner, thereby improving the intelligence and automation of the spindle box structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the side section structure of the present invention; Figure 4 This is a schematic diagram of the protective shell structure of the present invention; Figure 5 This is a schematic diagram of the large ball structure of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the structure of the warning light and controller of the present invention; Figure 8 It is a schematic diagram of a partial cross-sectional structure of the present invention; Fig. 9 For the present invention Figure 8 Enlarged structural diagram at B in the middle.

[0016] In the figure: 1. Motor outer stator; 2. Fastening bolt 1; 3. Main body; 4. Rotating shaft; 5. Mounting plate; 6. Fastening bolt 2; 7. Mounting slot 1; 8. Brake caliper; 9. Brake disc; 10. Movable slot; 11. Rolling slot; 12. Positioning shell; 13. Protective shell; 14. Connecting shell; 15. Limit rod; 16. Large ball; 17. Small ball; 18. Connecting rod; 19. Rotating slot; 20. Infrared transmitter; 21. Mounting slot 2; 22. Infrared receiver; 23. Warning light; 24. Controller. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 9A high-power direct-drive motor spindle box structure includes a motor outer stator 1, the interior of the motor outer stator 1 is connected to a body 3, the inner wall of the body 3 is fixedly equipped with a protective shell 13, the outer wall of the body 3 is provided with a fastening bolt 2, the inner wall of the motor outer stator 1 is fixedly equipped with a positioning shell 12, the inner wall of the positioning shell 12 is provided with a movable groove 10, the inner wall of the movable groove 10 is provided with a rolling groove 11, the inner wall of the movable groove 10 is fixedly equipped with a connecting shell 14, the outer wall of the connecting shell 14 is fixedly equipped with a limit rod 15, the outer wall of the limit rod 15 is rotatably connected with a large ball 16, the inner wall of the connecting shell 14 is fixedly equipped with a connecting rod 18, and the outer wall of the connecting rod 18 is rotatably connected with a small ball 17, A rotating groove 19 is provided in the middle of the large ball 16, and an infrared transmitter 20 is fixedly installed on the inner wall of the rotating groove 19. A mounting groove 21 is provided on the outer wall of the limit rod 15, and an infrared receiver 22 is fixedly installed on the inner wall of the mounting groove 21. The outer walls of the large ball 16 and the small ball 17 are both rollingly connected with a rotating shaft 4. A mounting plate 5 is fixedly installed on the end of the motor outer stator 1 away from the body 3, and a mounting groove 7 is provided in the middle of the mounting plate 5. A brake caliper 8 is provided on the inner wall of the mounting groove 7, and a brake disc 9 is provided on the outer wall of the brake caliper 8. A fastening bolt 26 is provided between the motor outer stator 1 and the protective shell 13, and a warning light 23 and a controller 24 are fixedly installed on the outer walls of the connecting shell 14.

[0019] In the above structure, by setting the motor outer stator 1, fastening bolt 2, main body 3, rotating shaft 4, movable groove 10, rolling groove 11, connecting shell 14, limiting rod 15, large ball 16, and small ball 17 structure, the spindle box structure uses the rotating shaft 4 to directly connect the motor outer stator 1 and the main body 3 during operation, so that the rotating shaft 4 replaces the inner rotor for transmission operation, thereby eliminating the intermediate connection mechanisms such as pulleys and couplings, the indexing of the rotating shaft 4 is more accurate, and there is no error generated during power transmission. The rotating shaft 4 can provide greater torque when rotating, reduce torque consumption, and thus improve the energy utilization and power performance of the spindle box structure.

[0020] In a preferred embodiment: the protective shell 13 is fixedly connected to the motor outer stator 1 through the fastening bolts 6, and the positioning shell 12 is fixedly connected to the motor outer stator 1 through the protective shell 13, and the inner wall of the rolling groove 11 is rollingly connected to the outer wall of the large ball 16.

[0021] In the above structure, through the protection shell 13 and the large ball 16 structure, the protection shell 13 can fix the positioning shell 12, and the large ball 16 and the small ball 17 can reduce the friction generated by the rotation of the rotating shaft 4 when the rotating shaft 4 rotates, thereby reducing the loss of the rotating shaft 4, thereby extending the service life of the rotating shaft 4, and further improving the practicality and application value of the spindle box structure.

[0022] In a preferred embodiment, there are a plurality of large balls 16 , and the plurality of large balls 16 are divided into a plurality of groups, and the plurality of groups are evenly distributed along the inner wall of the positioning shell 12 .

[0023] In the above structure, by setting up several groups of large ball 16 structures, large ball 16 and small ball 17 are used to contact the rotating shaft 4, so as to ensure that the wear of the rotating shaft 4 as a whole during the rotation process is greatly reduced, and the service life of the rotating shaft 4 is extended on the basis of maintaining the high-speed rotation of the rotating shaft 4, and the wear is reduced, thereby improving the performance of the spindle box structure, extending the service life of the spindle box structure, and reducing the maintenance frequency.

[0024] In a preferred embodiment, the rotating slot 19 is electrically connected to the infrared receiver 22 , and the controller 24 is electrically connected to the prompt light 23 , the rotating slot 19 and the infrared receiver 22 , respectively.

[0025] In the above structure, through the arrangement of the warning light 23 and the controller 24, during the rotation of the rotating shaft 4, its outer wall will be rollingly connected with the outer walls of the large ball 16 and the small ball 17 respectively, so that the large ball 16 and the small ball 17 will rotate. When any of the large ball 16 and the small ball 17 does not rotate, the controller 24 will control the warning light 23 to light up, thereby automatically warning the user, thereby improving the intelligence and automation of the spindle box.

[0026] In a preferred embodiment, the outer wall of the small ball 17 is rollingly connected to the inner wall of the connecting shell 14, and the large ball 16 and the small ball 17 are both made of 304 stainless steel.

[0027] In the above structure, the connecting shell 14 and the small ball 17 structure are set, which will also drive the small ball 17 to rotate when the rotating shaft 4 rotates, and the connecting shell 14 will limit the rotation of the small ball 17, thereby preventing the small ball 17 from shaking or even position shifting, thereby improving the stability of the small ball 17 during rotation.

[0028] In a preferred embodiment: the outer stator 1 of the motor is fixedly connected to the body 3 by means of a fastening bolt 2 , and when the outer wall of the brake disc 9 fits with the outer wall of the rotating shaft 4 , the rotating shaft 4 is fixedly connected to the positioning shell 12 .

[0029] In the above structure, through the provided brake disc 9 structure, when the brake caliper 8 is operating, the brake disc 9 will be driven to fit the rotating shaft 4, thereby connecting the outer stator 1 of the motor and the rotating shaft 4 as a whole. At the same time, it can also ensure that the rotating shaft 4 stops operating due to the obstruction of the brake disc 9 during rotation, thereby facilitating the user to adjust the rotation speed of the rotating shaft 4 and further facilitating the user's operation.

[0030] In a preferred embodiment, the position of the infrared receiver 22 corresponds to the position of the infrared transmitter 20 , and a plurality of connecting shells 14 are fixed to each other via a limiting rod 15 .

[0031] In the above structure, by setting up the infrared receiver 22 and the infrared transmitter 20 structure, when the large ball 16 is rotating, the infrared receiver 22 will overlap with the infrared transmitter 20 once every time the large ball 16 rotates one circle, so that the rolling connection between the rotating shaft 4 and the large ball 16 is monitored, thereby achieving the effect of monitoring the operating status of the spindle box structure, and ensuring the normal operation of the alarm function of the spindle box structure.

[0032] In a preferred embodiment: the body 3 is connected to the outer stator 1 of the motor via the rotating shaft 4, and the rotating shaft 4 and the positioning shell 12 are both made of Q235 stainless steel.

[0033] In the above structure, Q235 has a moderate carbon content and good comprehensive performance, and its strength, plasticity and welding properties are well coordinated, which makes it convenient for users to process it, ensures that the spindle box structure can be assembled, and reduces the production technical difficulty of the spindle box structure.

[0034] Working principle: First, the user can connect the motor outer stator 1 and the body 3 through the rotating shaft 4, so that the protective shell 13 provides protection for the rotating shaft 4 and stabilizes the rotating shaft 4. During the operation of the motor outer stator 1, the large ball 16 and the small ball 17 can roll along the outer wall of the rotating shaft 4, and the motor outer stator 1 drives the rotating shaft 4 to rotate. At this time, the rotating shaft 4 can replace the pulley and the transmission belt for transmission operation, and there is no need to add a connecting mechanism for transmission. The large ball 16 and the small ball 17 arranged inside the motor outer stator 1 rotate due to the rotation of the rotating shaft 4, which can not only reduce the friction of the rotating shaft 4 and extend the service life of the rotating shaft 4, but also when the large ball 16 rotates, the infrared receiver 22 will monitor the rotation state of the large ball 16 with the infrared transmitter 20. When the time spent by the infrared receiver 22 and the infrared transmitter 20 for two overlaps is not uniform, the controller 24 will control the prompt light 23 to light up, thereby alerting the user that there is a fault inside the spindle box structure, thereby improving the intelligence and automation of the spindle box structure.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-power direct-drive motor spindle box structure, comprising a motor outer stator (1), characterized in that: The interior of the motor outer stator (1) is connected to a body (3), the inner wall of the body (3) is fixedly equipped with a protective shell (13), the outer wall of the body (3) is provided with a fastening bolt (2), the inner wall of the motor outer stator (1) is fixedly equipped with a positioning shell (12), the inner wall of the positioning shell (12) is provided with a movable groove (10), the inner wall of the movable groove (10) is provided with a rolling groove (11), the inner wall of the movable groove (10) is fixedly equipped with a connecting shell (14), the outer wall of the connecting shell (14) is fixedly equipped with a limit rod (15), the outer wall of the limit rod (15) is rotatably connected to a large ball (16), the inner wall of the connecting shell (14) is fixedly equipped with a connecting rod (18), the outer wall of the connecting rod (18) is rotatably connected to a small ball (17), and the middle part of the large ball (16) is provided with a rotatable groove (11). The outer wall of the rotation groove (19) is provided with an infrared transmitter (20), the outer wall of the limit rod (15) is provided with a second mounting groove (21), the inner wall of the second mounting groove (21) is provided with an infrared receiver (22), the outer walls of the large ball (16) and the small ball (17) are both rollingly connected with a rotating shaft (4), the end of the motor outer stator (1) away from the body (3) is fixedly provided with a mounting plate (5), the middle part of the mounting plate (5) is provided with a first mounting groove (7), the inner wall of the first mounting groove (7) is provided with a brake caliper (8), the outer wall of the brake caliper (8) is provided with a brake disc (9), a fastening bolt (6) is provided between the motor outer stator (1) and the protective shell (13), and the outer wall of the connecting shell (14) is respectively fixedly provided with a warning light (23) and a controller (24).

2. A high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The protective shell (13) is fixedly connected to the motor outer stator (1) via a second fastening bolt (6), and the positioning shell (12) is fixedly connected to the motor outer stator (1) via the protective shell (13), and the inner wall of the rolling groove (11) is rollingly connected to the outer wall of the large ball (16).

3. The high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The number of the large balls (16) is a plurality, and the plurality of large balls (16) are divided into a plurality of groups, and the plurality of groups are evenly distributed along the inner wall of the positioning shell (12).

4. A high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The rotating slot (19) is electrically connected to the infrared receiver (22), and the controller (24) is electrically connected to the prompt light (23), the rotating slot (19) and the infrared receiver (22), respectively.

5. The high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The outer wall of the small ball (17) is rollingly connected to the inner wall of the connecting shell (14), and the large ball (16) and the small ball (17) are both made of 304 stainless steel.

6. A high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The motor outer stator (1) is fixedly connected to the body (3) by means of a fastening bolt (2), and when the outer wall of the brake disc (9) is in contact with the outer wall of the rotating shaft (4), the rotating shaft (4) is fixedly connected to the positioning shell (12).

7. The high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The position of the infrared receiver (22) corresponds to the position of the infrared transmitter (20), and a plurality of the connecting shells (14) are fixed to each other via a limiting rod (15).

8. The high-power direct-drive motor spindle box structure according to claim 1, characterized in that: The body (3) is connected to the outer stator (1) of the motor via a rotating shaft (4), and the rotating shaft (4) and the positioning shell (12) are both made of Q235 stainless steel.

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