Transmission structure of straight combined main shaft of gantry five-axis machine tool

Abstract

The utility model relates to the technical field of main shaft transmission, in particular to a transmission structure of a gantry five-axis machine tool straight combined type main shaft, which comprises a main shaft head, a main shaft motor is arranged in the main shaft head, a coupler is arranged on the main shaft motor, and a straight combined type main shaft is arranged on the main shaft head. The direct junction type main shaft is connected with the coupler; a first motor plate is arranged on the spindle motor, a second motor plate is arranged on the motor plate, the second motor plate is connected with the spindle head, and a first limiting mechanism and a second limiting mechanism are further arranged on the spindle head. The main shaft and the main shaft are connected with the main shaft head into a whole, so that the transmission rigidity of the direct-connection type main shaft can be enhanced, the vibration resistance of the direct-connection type main shaft can be improved, the service life of the whole device can be prolonged, and the quality and accuracy of workpieces machined by the device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spindle transmission, in particular to a transmission structure of a direct-connected spindle of a gantry five-axis machine tool. Background Art

[0002] The gantry five-axis machine tool adopts a fixed-beam gantry structure. In order to adapt to the precision processing of various materials and various processing methods, and to obtain the best production efficiency, processing accuracy and surface quality, the spindle drive system needs to have a wide speed range and corresponding output torque, and it needs to be able to provide sufficient cutting rigidity and be easy to process and assemble. Most of the existing main transmission systems of gantry five-axis machine tools adopt a direct-drive transmission method. First, the spindle connecting sleeve is fixed to the spindle head, and then the spindle is fixed to the spindle connecting sleeve. The concentricity of the spindle axis and the axis of the positioning stop of the spindle connecting sleeve is ensured by punching, and half of the coupling is fixed to the spindle; then the spindle motor and the motor plate are fixed separately, and the concentricity of the spindle motor axis and the axis of the positioning stop of the motor plate is ensured by punching, and the other half of the coupling is fixed to the spindle motor; the spindle motor is hoisted into the spindle head, the motor plate positioning stop is installed into the spindle connecting sleeve, and then the screws are locked through the notch on the circumference of the spindle connecting sleeve to firmly fix the motor plate and the spindle connecting sleeve.

[0003] In this gantry five-axis machine tool, the spindle motor and the direct-drive spindle head are not directly rigidly connected, but are transitioned through a longer spindle connecting sleeve, and there is no support on the upper part of the spindle connecting sleeve. Therefore, when the spindle processing load is heavy, it is easy for the spindle motor to vibrate severely, which will directly affect the rotation accuracy of the spindle, resulting in severe wear of the workpiece and poor surface quality when processing the workpiece. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The utility model is aimed at the above-mentioned defects existing in the prior art and specially proposes a transmission structure of a direct-drive spindle of a gantry five-axis machine tool. Through the arrangement of the second motor plate, the direct-drive spindle and the spindle and the spindle head are connected as one, which can enhance the transmission rigidity of the direct-drive spindle and improve the vibration resistance of the direct-drive spindle, thereby extending the service life of the entire device and improving the quality and precision when using the device to process workpieces.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the utility model provides a transmission structure of a direct-drive spindle of a gantry five-axis machine tool, including a spindle head, a movable spindle motor is arranged in the spindle head, a coupling is arranged on the output end of the spindle motor, a direct-drive spindle is arranged on the spindle head, and the direct-drive spindle is connected to the coupling; a first motor plate is arranged on the spindle motor, a second motor plate is arranged on the motor plate, and the second motor plate is connected to the spindle head, and a first limiting mechanism and a second limiting mechanism are also arranged on the spindle head.

[0008] Preferably, the first limiting mechanism includes a first limiting ring and a first connecting plate; the first limiting ring has two and is symmetrically arranged on the outer side of the coupling, a bearing is arranged inside the first limiting ring, a placement groove for installing the bearing is arranged on the first limiting ring, and the bearing can be clamped with the coupling; the number of the first connecting plates is the same as the number of the first limiting rings and is arranged on the first limiting ring in a one-to-one correspondence, and the first connecting plate can be connected to the spindle head.

[0009] Preferably, a first fixing component is provided on the spindle head, and the first fixing component includes a first fixing plate and a first bolt; the first fixing plate has two and is symmetrically arranged on the spindle head, and the two fixing plates are respectively connected to the two first connecting plates, and a plurality of first anti-slip grooves are arranged on the first fixing plate; the first bolt is movably arranged on the first fixing plate, and a first arc groove for the first bolt to move is arranged on the first fixing plate, and the working end of the first bolt can pass through the first fixing plate and be threadedly connected to the spindle head, and a plurality of first protrusions are arranged on the first bolt.

[0010] Preferably, the first limiting ring is also provided with a plurality of first fixing parts, the first fixing parts include a first fixing block, there are two first fixing blocks, and the two first fixing blocks are respectively provided on the two first limiting rings, one of the first fixing blocks is provided with a first nut, and the other first fixing block is provided with a second bolt, and the working end of the second bolt can pass through the two first fixing blocks in sequence and be threadedly connected with the first nut.

[0011] Preferably, the second limiting mechanism includes a second limiting ring and a second connecting plate; the second limiting ring has two and is symmetrically arranged on the outside of the direct-connected spindle, a buffer gasket is arranged inside the second limiting ring, and the buffer gasket can be abutted against the direct-connected spindle; the number of second connecting plates is the same as the number of second limiting rings and is arranged on the second limiting ring in a one-to-one correspondence, and the second connecting plate can be connected to the spindle head.

[0012] Preferably, a second fixing assembly is provided on the spindle head, and the second fixing assembly includes a second fixing plate and a third bolt; the second fixing plates have two and are symmetrically arranged on the spindle head, and the two fixing plates are respectively connected to the two second connecting plates, and a plurality of second anti-slip grooves are arranged on the second fixing plate; the third bolt is movably arranged on the second fixing plate, and a second arc groove for the third bolt to move is arranged on the second fixing plate, and the working end of the third bolt can pass through the second fixing plate and be threadedly connected to the spindle head, and a plurality of second protrusions are arranged on the third bolt.

[0013] Preferably, a second fixing portion is also provided on the second limiting ring, and the second fixing portion includes a second fixing block. There are two second fixing blocks, and the two second fixing blocks are respectively provided on the two second limiting rings, one of the second fixing blocks is provided with a second nut, and the other second fixing block is provided with a fourth bolt, and the working end of the fourth bolt can pass through the two second fixing blocks in sequence and be threadedly connected with the second nut.

[0014] Preferably, a heat dissipation component is also provided on the spindle head, and the heat dissipation component includes a mounting frame and a cooling fan; the mounting frame is arranged on the side of the spindle head close to the spindle motor, and a protective mesh cover is arranged on the mounting frame; the cooling fan is arranged on the side of the mounting frame close to the protective mesh cover.

[0015] 3. Beneficial Effects

[0016] Compared with the prior art, the utility model connects the direct-type spindle and the spindle and the spindle head as one through the provision of a second motor plate, which can enhance the transmission rigidity of the direct-type spindle and improve the vibration resistance of the direct-type spindle, thereby extending the service life of the entire device and improving the quality and precision of the device when processing workpieces.

[0017] Furthermore, the first limiting mechanism and the second limiting mechanism are respectively in contact with the coupling and the direct-drive spindle, so that the coupling and the direct-drive spindle can be limited again, thereby further enhancing the transmission rigidity of the direct-drive spindle, and further improving the vibration resistance of the direct-drive spindle, thereby further extending the service life of the entire device, which can also further improve the quality and precision of using the device when processing workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structure diagram of the utility model. Figure 1 .

[0019] Figure 2 This is a three-dimensional structure diagram of the utility model. Figure 2 .

[0020] Figure 3 This is a partial three-dimensional structure cutaway view of the utility model. Figure 1 .

[0021] Figure 4 This is a partial three-dimensional structure cutaway view of the utility model. Figure 2 .

[0022] Figure 5 This is a partial three-dimensional structure cutaway view of the utility model. Figure 3 .

[0023] Figure 6 This application Figure 5 A local enlarged schematic diagram of point A in the middle.

[0024] Figure 7 This is a partial three-dimensional structure cutaway view of the utility model. Figure 4 .

[0025] Figure 8 This application Figure 7 A local enlarged schematic diagram of point B in the middle.

[0026] In the figure:

[0027] 1 is the spindle head; 11 is the heat dissipation component; 111 is the mounting frame; 112 is the heat dissipation fan; 113 is the protective mesh cover; 2 is the spindle motor; 21 is the coupling; 3 is the first motor plate; 4 is the second motor plate; 5 is the direct-connected spindle; 6 is the first limiting mechanism; 61 is the first limiting ring; 611 is the placement groove; 62 is the bearing; 63 is the first connecting plate; 64 is the first fixing component; 641 is the first fixing plate; 6411 is the first anti-slip groove; 6412 is the first arc groove; 642 is the first bolt; 643 is The first protrusion; 65 is the first fixing part; 651 is the first fixing block; 652 is the second bolt; 653 is the first nut; 7 is the second limiting mechanism; 71 is the second limiting ring; 72 is the buffer gasket; 73 is the second connecting plate; 74 is the second fixing assembly; 741 is the second fixing plate; 7411 is the second anti-slip groove; 7412 is the second arc groove; 742 is the third bolt; 743 is the second protrusion; 75 is the second fixing part; 751 is the second fixing block; 752 is the fourth bolt; 753 is the second nut. DETAILED DESCRIPTION

[0028] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0029] Embodiment 1:

[0030] like Figures 1 to 8As shown, the transmission structure of the direct-drive spindle of the gantry five-axis machine tool in this embodiment includes a spindle head 1, a movable spindle motor 2 is arranged in the spindle head 1, a coupling 21 is arranged on the output end of the spindle motor 2, a direct-drive spindle 5 is arranged on the spindle head 1, and the direct-drive spindle 5 is connected to the coupling 21; a first motor plate 3 is arranged on the spindle motor 2, a second motor plate 4 is arranged on the motor plate, and the second motor plate 4 is connected to the spindle head 1, and a first limiting mechanism 6 and a second limiting mechanism 7 are also arranged on the spindle head 1.

[0031] When the device is needed, first install the direct-connected spindle 5 into the spindle head 1 and fix it to the spindle head 1 with screws, then put the second motor plate 4 into the spindle head 1, and then fix the second motor plate 4 to the spindle head 1 with screws, and fix half of the coupling 21 to the direct-connected spindle 5, then fix the spindle motor 2 and the first motor plate 3 separately, and fix the other half of the coupling 21 to the output end of the spindle motor 2, and then use a hoisting method to install the spindle motor 2 to the inside of the spindle head 1, and fix the first motor plate 3 and the second motor plate 4, then install the first limiting mechanism 6 and the second limiting mechanism 7 into the spindle head 1, so that the first limiting mechanism 6 and the second limiting mechanism 7 are respectively abutted against the coupling 21 and the direct-connected spindle 5, so that the device is assembled. By setting the second motor plate 4, the direct spindle and the spindle are connected to the spindle head 1 as a whole, which can enhance the transmission rigidity of the direct-connected spindle 5 and improve the vibration resistance of the direct-connected spindle 5, thereby extending the service life of the entire device, and can also improve the quality and precision of using the device when processing workpieces, and through the first limiting mechanism 6 and the second limiting mechanism 7, they are respectively abutted against the coupling 21 and the direct-connected spindle 5, and then the coupling 21 and the direct-connected spindle 5 can be limited again, thereby further enhancing the transmission rigidity of the direct-connected spindle 5, and can also further improve the vibration resistance of the direct-connected spindle 5, thereby further extending the service life of the entire device, which can also further improve the quality and precision of using the device when processing workpieces.

[0032] like Figure 4 and Figure 7 As shown, the first limiting mechanism 6 includes a first limiting ring 61 and a first connecting plate 63; the first limiting ring 61 has two and is symmetrically arranged on the outer side of the coupling 21, a bearing 62 is arranged in the first limiting ring 61, and a placement groove 611 for installing the bearing 62 is arranged on the first limiting ring 61, and the bearing 62 can be clamped with the coupling 21; the number of the first connecting plates 63 is the same as the number of the first limiting rings 61 and is arranged on the first limiting ring 61 in a one-to-one correspondence, and the first connecting plate 63 can be connected to the spindle head 1.

[0033] First, two first limiting rings 61 are sleeved on the outside of the coupling 21 so that the bearing 62 is clamped with the coupling 21, and then connected to the main shaft head 1 through the first connecting plate 63, so that the coupling 21 can be supported and limited, so that the coupling 21 is more stable during operation and vibration can be reduced. In addition, by setting the groove 611 on the first limiting ring 61, the bearing 62 is more stable on the first limiting ring 61.

[0034] like Figure 7 and Figure 8 As shown, a first fixing component 64 is arranged on the spindle head 1, and the first fixing component 64 includes a first fixing plate 641 and a first bolt 642; the first fixing plate 641 has two and is symmetrically arranged on the spindle head 1, and the two fixing plates are respectively connected to the two first connecting plates 63, and a plurality of first anti-slip grooves 6411 are arranged on the first fixing plate 641; the first bolt 642 is movably arranged on the first fixing plate 641, and a first arc groove 6412 for the first bolt 642 to move is arranged on the first fixing plate 641, and the working end of the first bolt 642 can penetrate the first fixing plate 641 and be threadedly connected to the spindle head 1, and a plurality of first protrusions 643 are arranged on the first bolt 642.

[0035] The first fixing plate 641 is connected to the spindle head 1, so that the area of ​​the fit with the spindle head 1 can be increased, thereby making the first fixing plate 641 relatively stable on the spindle head 1, and the first anti-slip groove 6411 is set on the first fixing plate 641, so that the friction between the first fixing plate 641 and the spindle head 1 can be increased, and then the first fixing plate 641 is fixed to the spindle head 1 by the first bolt 642, and the first protrusion 643 is set on the first bolt 642, so that when the first bolt 642 fixes the first fixing plate 641 for a long time, the first bolt 642 can be prevented from rotating, thereby preventing the first fixing plate 641 from loosening, which can further reduce the vibration of the coupling 21, and further reduce the vibration of the direct-drive spindle 5, thereby further improving the quality and accuracy of the device when processing workpieces.

[0036] like Figure 7 As shown, a plurality of first fixing parts 65 are also provided on the first limiting ring 61, and the first fixing part 65 includes a first fixing block 651. There are two first fixing blocks 651, and the two first fixing blocks 651 are respectively provided on the two first limiting rings 61, one of the first fixing blocks 651 is provided with a first nut 653, and the other first fixing block 651 is provided with a second bolt 652, and the working end of the second bolt 652 can pass through the two first fixing blocks 651 in sequence and be threadedly connected with the first nut 653.

[0037] Through the cooperation of the second bolt 652 and the first nut 653, this connection method and then through the setting of the first fixing block 651, the first limiting ring 61 can be fixed again, so that the first limiting ring 61 can wrap the coupling 21 more firmly, and can further reduce the vibration generated by the coupling 21, and can further reduce the vibration of the direct-connected spindle 5, which can also further improve the quality and accuracy of using the device when processing workpieces.

[0038] like Figure 3 and Figure 5 As shown, the second limiting mechanism 7 includes a second limiting ring 71 and a second connecting plate 73; the second limiting ring 71 has two and is symmetrically arranged on the outer side of the direct-connected spindle 5, a buffer gasket 72 is arranged inside the second limiting ring 71, and the buffer gasket 72 can be arranged in contact with the direct-connected spindle 5; the number of the second connecting plates 73 is the same as the number of the second limiting rings 71 and is arranged on the second limiting ring 71 in a one-to-one correspondence, and the second connecting plate 73 can be connected to the spindle head 1.

[0039] First, two second limiting rings 71 are sleeved on the outside of the direct-connected spindle 5 so that the buffer gasket 72 is in contact with the direct-connected spindle 5, and then connected to the spindle head 1 through the second connecting plate 73, so as to support and limit the direct-connected spindle 5, so that the direct-connected spindle 5 is more stable during operation, and the vibration can be further reduced. In addition, through the provision of the buffer gasket 72, the second limiting ring 71 and the direct-connected spindle 5 can be effectively protected, and the second limiting ring 71 can be prevented from causing damage to the surface of the direct-connected spindle 5.

[0040] like Figure 5 and Figure 6 As shown, a second fixing component 74 is arranged on the spindle head 1, and the second fixing component 74 includes a second fixing plate 741 and a third bolt 742; the second fixing plate 741 has two and is symmetrically arranged on the spindle head 1, and the two fixing plates are respectively connected to the two second connecting plates 73, and a plurality of second anti-slip grooves 7411 are arranged on the second fixing plate 741; the third bolt 742 is movably arranged on the second fixing plate 741, and a second arc groove 7412 for the third bolt 742 to move is arranged on the second fixing plate 741, and the working end of the third bolt 742 can penetrate the second fixing plate 741 and be threadedly connected to the spindle head 1, and a plurality of second protrusions 743 are arranged on the third bolt 742.

[0041] By connecting the second fixing plate 741 to the spindle head 1, the area of ​​the fit with the spindle head 1 can be increased, thereby making the second fixing plate 741 relatively stable on the spindle head 1, and by providing the second anti-slip groove 7411 on the second fixing plate 741, the friction between the second fixing plate 741 and the spindle head 1 can be increased, and then the second fixing plate 741 is fixed to the spindle head 1 by the third bolt 742, and by providing the second protrusion 743 on the third bolt 742, the third bolt 742 can be prevented from rotating when the second fixing plate 741 is fixed for a long time, thereby preventing the second fixing plate 741 from loosening, which can further reduce the vibration of the direct-drive spindle 5, thereby further improving the quality and accuracy of the device when processing workpieces.

[0042] like Figure 5 As shown, a second fixing portion 75 is also provided on the second limiting ring 71, and the second fixing portion 75 includes a second fixing block 751. There are two second fixing blocks 751, and the two second fixing blocks 751 are respectively provided on the two second limiting rings 71, one of the second fixing blocks 751 is provided with a second nut 753, and the other second fixing block 751 is provided with a fourth bolt 752, and the working end of the fourth bolt 752 can pass through the two second fixing blocks 751 in sequence and be threadedly connected with the second nut 753.

[0043] Through the cooperation of the fourth bolt 752 and the second nut 753, this connection method is simpler, and through the setting of the second fixing block 751, the second limiting ring 71 can be fixed again, so that the second limiting ring 71 can wrap the direct-connected spindle 5 more firmly, and thus can further reduce the vibration of the direct-connected spindle 5, which can also further improve the quality and accuracy of using the device when processing workpieces.

[0044] Embodiment 2:

[0045] Compared with Example 1, Figure 2 As shown, in this embodiment, a heat dissipation component 11 is also provided on the spindle head 1, and the heat dissipation component 11 includes a mounting frame 111 and a cooling fan 112; the mounting frame 111 is arranged on the side of the spindle head 1 close to the spindle motor 2, and a protective mesh cover 113 is arranged on the mounting frame 111; the cooling fan 112 is arranged on the side of the mounting frame 111 close to the protective mesh cover 113.

[0046] By starting the cooling fan 112 on the mounting bracket 111, when the cooling fan 112 is working, the spindle motor 2 can be cooled, so that the spindle motor 2 is more stable during operation, thereby increasing the speed of processing workpieces using the device, and by setting the protective mesh cover 113, the cooling fan 112 can be contained.

[0047] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A transmission structure of a direct-drive spindle of a gantry five-axis machine tool, characterized in that: The transmission structure of the direct-drive spindle of the gantry five-axis machine tool comprises a spindle head (1), a movable spindle motor (2) is arranged in the spindle head (1), a coupling (21) is arranged on the output end of the spindle motor (2), a direct-drive spindle (5) is arranged on the spindle head (1), and the direct-drive spindle (5) is connected to the coupling (21); a first motor plate (3) is arranged on the spindle motor (2), a second motor plate (4) is arranged on the motor plate, and the second motor plate (4) is connected to the spindle head (1), and the spindle head (1) is also provided with a first limiting mechanism (6) and a second limiting mechanism (7); The first limiting mechanism (6) comprises a first limiting ring (61) and a first connecting plate (63); The first limiting ring (61) has two symmetrically arranged outside the coupling (21), a bearing (62) is arranged inside the first limiting ring (61), a placement groove (611) for installing the bearing (62) is arranged on the first limiting ring (61), and the bearing (62) can be clamped and arranged with the coupling (21); The number of the first connecting plates (63) is the same as the number of the first limiting rings (61) and they are arranged on the first limiting rings (61) in a one-to-one correspondence, and the first connecting plates (63) can be connected to the spindle head (1).

2. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 1 is characterized in that: The spindle head (1) is provided with a first fixing assembly (64), wherein the first fixing assembly (64) comprises a first fixing plate (641) and a first bolt (642); The first fixing plates (641) have two and are symmetrically arranged on the spindle head (1), and the two fixing plates are respectively connected to the two first connecting plates (63), and the first fixing plates (641) are provided with a plurality of first anti-slip grooves (6411); The first bolt (642) is movably arranged on the first fixing plate (641), and the first fixing plate (641) is provided with a first arc groove (6412) for the first bolt (642) to move, and the working end of the first bolt (642) can pass through the first fixing plate (641) and be threadedly connected to the spindle head (1), and the first bolt (642) is provided with a plurality of first protrusions (643).

3. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 1 is characterized in that: A plurality of first fixing parts (65) are also provided on the first limiting ring (61), and the first fixing parts (65) include first fixing blocks (651). There are two first fixing blocks (651), and the two first fixing blocks (651) are respectively provided on the two first limiting rings (61), one of the first fixing blocks (651) is provided with a first nut (653), and the other first fixing block (651) is provided with a second bolt (652), and the working end of the second bolt (652) can pass through the two first fixing blocks (651) in sequence and be threadedly connected with the first nut (653).

4. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 1 is characterized in that: The second limiting mechanism (7) comprises a second limiting ring (71) and a second connecting plate (73); The second limiting ring (71) has two symmetrically arranged outside the direct-connection main shaft (5), a buffer gasket (72) is arranged inside the second limiting ring (71), and the buffer gasket (72) can be arranged in contact with the direct-connection main shaft (5); The number of the second connecting plates (73) is the same as the number of the second limiting rings (71) and they are arranged on the second limiting rings (71) in a one-to-one correspondence, and the second connecting plates (73) can be connected to the spindle head (1).

5. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 4 is characterized in that: The spindle head (1) is provided with a second fixing assembly (74), wherein the second fixing assembly (74) comprises a second fixing plate (741) and a third bolt (742); The second fixing plates (741) have two and are symmetrically arranged on the spindle head (1), and the two fixing plates are respectively connected to the two second connecting plates (73), and a plurality of second anti-slip grooves (7411) are arranged on the second fixing plates (741); The third bolt (742) is movably arranged on the second fixing plate (741), and the second fixing plate (741) is provided with a second arc groove (7412) for the third bolt (742) to move, and the working end of the third bolt (742) can pass through the second fixing plate (741) and be threadedly connected to the spindle head (1), and the third bolt (742) is provided with a plurality of second protrusions (743).

6. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 4, characterized in that: A second fixing portion (75) is also provided on the second limiting ring (71), and the second fixing portion (75) includes a second fixing block (751). There are two second fixing blocks (751), and the two second fixing blocks (751) are respectively provided on the two second limiting rings (71), one of the second fixing blocks (751) is provided with a second nut (753), and the other second fixing block (751) is provided with a fourth bolt (752), and the working end of the fourth bolt (752) can pass through the two second fixing blocks (751) in sequence and be threadedly connected with the second nut (753).

7. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 1, characterized in that: The spindle head (1) is also provided with a heat dissipation component (11), and the heat dissipation component (11) comprises a mounting frame (111) and a heat dissipation fan (112).

8. The transmission structure of the direct-drive spindle of a gantry five-axis machine tool according to claim 7, characterized in that: The mounting frame (111) is arranged on a side of the spindle head (1) close to the spindle motor (2), and a protective mesh cover (113) is arranged on the mounting frame (111); The heat dissipation fan (112) is arranged on a side of the mounting frame (111) close to the protective mesh cover (113).

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