Main shaft mechanism for five-axis machining center

Abstract

The utility model relates to the technical field of machining centers, and discloses a spindle mechanism for a five-axis machining center, which comprises a mounting plate, a mounting shell arranged on the mounting plate and an electric spindle arranged on the mounting shell, a second driving part used for driving the electric spindle to rotate on the vertical face is arranged in the mounting shell, the electric spindle is provided with a first synchronous wheel located in the mounting shell, an output shaft of the second driving part is provided with a second synchronous wheel, and the first synchronous wheel and the second synchronous wheel are in transmission connection through a synchronous belt. An adjusting part used for adjusting the second driving part is arranged in the mounting shell, so that the distance between the first synchronous wheel and the second synchronous wheel can be adjusted, mounting personnel can adjust the distance between the first synchronous wheel and the second synchronous wheel according to the requirements of different stages, and the effect of conveniently mounting the synchronous belt is achieved; meanwhile, the transmission efficiency of the first synchronizing wheel and the second synchronizing wheel is ensured.

Description

Technical Field

[0001] The present application belongs to the technical field of machining centers, and specifically relates to a spindle mechanism for a five-axis machining center. Background Art

[0002] With the development and progress of technology, five-axis machining centers have gradually entered the market. They add the rotational movement of the spindle mechanism on the horizontal and vertical planes on the basis of three axes, realizing high-precision machining of workpieces with complex surfaces.

[0003] In the related art, the spindle mechanism of the five-axis machining center includes a mounting plate arranged on the Z-axis bracket, a mounting shell arranged on the mounting plate and an electric spindle arranged on the mounting shell, the bottom of the electric spindle has a drill bit, the mounting plate is provided with a first driving member for driving the mounting shell to rotate on a horizontal plane, the interior of the mounting shell is provided with a second driving member for driving the electric spindle to rotate on a vertical plane, and the output shafts of the electric spindle and the second driving member are both provided with synchronous wheels, and the two synchronous wheels are connected by a synchronous belt transmission; however, when installing the synchronous belt, if the distance between the two synchronous wheels is small, the synchronous belt will become loose after being installed on the two synchronous wheels, thereby affecting the transmission efficiency between the two synchronous wheels, and if the distance between the two synchronous wheels is increased, it will make the installation of the synchronous wheels more difficult, thereby increasing the difficulty of installing the synchronous belt. Therefore, how to achieve the effect of facilitating the installation of the synchronous belt while ensuring that the two synchronous wheels maintain transmission efficiency has become an urgent problem to be solved. Utility Model Content

[0004] The present application provides a spindle mechanism for a five-axis machining center, which facilitates the installation of a synchronous belt while ensuring the transmission efficiency of two synchronous wheels.

[0005] The technical solution adopted in this application is:

[0006] A spindle mechanism for a five-axis machining center comprises a mounting plate, a mounting shell arranged on the mounting plate and an electric spindle arranged on the mounting shell, the mounting plate being provided with a first driving member for driving the mounting shell to rotate in a horizontal plane, a second driving member for driving the electric spindle to rotate in a vertical plane being arranged inside the mounting shell, the electric spindle being provided with a first synchronous wheel located inside the mounting shell, an output shaft of the second driving member being provided with a second synchronous wheel, the first synchronous wheel and the second synchronous wheel being connected via a synchronous belt transmission, and an adjusting member for adjusting the second driving member being arranged in the mounting shell so that the distance between the first synchronous wheel and the second synchronous wheel can be adjusted.

[0007] By adopting the above technical solution, when installing the synchronous belt, the synchronous belt is first installed to the outside of the first synchronous wheel and the second synchronous wheel, and then the adjusting member is operated, and then the adjusting member adjusts the second driving member, so that the second driving member drives the second synchronous wheel to move, so that the distance between the second synchronous wheel and the first synchronous wheel gradually increases, so that the synchronous belt is gradually tightened, so as to avoid the situation where the synchronous belt is loose and affects the transmission efficiency between the first synchronous wheel and the second synchronous wheel.

[0008] It can be understood that in the present application, an adjusting member is provided so that the adjusting member can adjust the distance between the first synchronous wheel and the second synchronous wheel, so that when the synchronous belt is installed, the distance between the first synchronous wheel and the second synchronous wheel can be kept at a small state, and then the synchronous belt is installed to the first synchronous wheel and the second synchronous wheel before the second driving member is adjusted, and finally the synchronous belt is kept in a tensioned state, thereby achieving the effect of facilitating the installation of the synchronous belt, reducing the difficulty of installing the synchronous belt, and improving the assembly efficiency of the spindle mechanism.

[0009] Optionally, the second driving member is provided with a fixing plate, the fixing plate is provided with a waist-shaped hole whose length direction is parallel to the vertical direction, the mounting shell is provided with a fastener penetrating the waist-shaped hole, and the adjusting member acts on the fixing plate.

[0010] By adopting the above technical solution, when installing the second driving member, the second driving member is first placed in the mounting shell, and then the fastener is inserted into the waist-shaped hole, and the fastener is threadedly connected to the mounting shell to complete the pre-fixation of the second driving member, and then the adjusting member is operated to make the adjusting member adjust the fixed plate, and then the fixed plate moves in the vertical direction. At this time, the fastener and the fixed plate slide relative to each other, so that the fixed plate drives the second driving member to move, so that the synchronous belt is gradually in a tensioned state. Since the fixed plate is pre-fixed by the fastener first, and then the adjusting member is used to adjust the fixed plate, the stability of the second driving member is increased to ensure that the synchronous belt remains in a tensioned state for a long time.

[0011] Optionally, the adjusting member includes an adjusting plate provided on the mounting shell and an adjusting rod threadedly connected to the adjusting plate, and the adjusting rod acts on the fixing plate so that when the adjusting rod rotates, the fixing plate moves in a vertical direction.

[0012] By adopting the above technical solution, when adjusting the second driving member, the adjusting rod is rotated to make the adjusting rod and the adjusting plate rotate relative to each other, thereby making the fixed plate move in the vertical direction, and the fixed plate drives the second driving member to move, so that the fixed plate drives the second driving member to move, thereby changing the distance between the second synchronous wheel and the first synchronous wheel, so that the synchronous belt is gradually in a tensioned state, so as to achieve the adjustment of the distance between the second synchronous wheel and the first synchronous wheel.

[0013] Optionally, the fixed plate is extended with a force-bearing plate, the adjustment plate has a supporting section located at the bottom of the force-bearing plate, and the adjustment rod is threadedly connected to the supporting section and acts on the force-bearing plate.

[0014] By adopting the above technical solution, since the support section is located at the bottom of the force-bearing plate and the adjusting rod is threadedly connected to the support section, when the adjusting rod is rotated to increase the distance between the second synchronous wheel and the first synchronous wheel, the adjusting rod pushes the force-bearing plate upward, so that the force-bearing plate drives the fixed plate to rise in the vertical direction, so as to increase the distance between the second synchronous wheel and the first synchronous wheel. By arranging the adjusting rod at the bottom of the force-bearing plate, the adjusting rod is always under the pressure of the fixed plate, so as to increase the connection stability between the adjusting rod and the support section, so as to avoid the relative rotation of the adjusting rod and the support section under the action of vibration.

[0015] Optionally, the adjusting member includes a rotating rod extending into the mounting shell through the top of the mounting shell and a stop block provided at the top of the rotating rod and cooperating with the stopper of the mounting shell, and one end of the bottom of the rotating rod is threadedly connected to the fixing plate.

[0016] By adopting the above technical solution, since the rotating rod extends into the mounting shell through the top of the mounting shell, and the stop block cooperates with the stop of the mounting shell, when adjusting the distance between the second synchronous wheel and the first synchronous wheel, it is only necessary to rotate the stop block, so that the stop block drives the rotating rod to rotate, thereby causing the rotating rod and the fixed plate to rotate relative to each other, so that the fixed plate moves in the vertical direction, thereby adjusting the distance between the second synchronous wheel and the first synchronous wheel, and thus achieving the effect of facilitating the adjustment of the tension of the synchronous belt. At the same time, as the use time of the spindle mechanism continues to increase, the synchronous belt may gradually become longer, and at this time, the stop block can be directly adjusted to keep the synchronous belt in a tensioned state.

[0017] Optionally, the fixing plate is provided with a matching block, and the rotating rod is threadedly connected to the matching block.

[0018] By adopting the above technical solution, since the rotating rod is threaded on the matching block, that is, the rotating rod is threadedly connected to the fixed plate through the matching block, it is possible to avoid the situation where the thickness of the fixed plate needs to be increased due to the connection between the rotating rod and the fixed plate, thereby reducing the thickness of the fixed plate and thus reducing the weight of the spindle mechanism, thereby achieving the effect of facilitating the movement of the spindle mechanism.

[0019] Optionally, the inner wall of the mounting shell is provided with fixing ribs, and the fastener is threadedly connected to the fixing ribs.

[0020] By adopting the above technical solution, since fixing ribs are provided inside the mounting shell, on the one hand, the connection between the fastener and the mounting shell is achieved, and on the other hand, the fixing ribs increase the structural strength of the mounting shell to increase the service life of the spindle mechanism.

[0021] Optionally, the electric spindle is provided with a rotating shaft extending into the interior of the mounting shell, the mounting shell is provided with a fixed sleeve mounted on the outside of the rotating shaft, the mounting shell is provided with a protective cover covering the outside of the synchronous belt, and the two ends of the protective cover are respectively connected to the fixed plate and the fixed sleeve.

[0022] By adopting the above technical solution, since the fixed sleeve is arranged on the outside of the rotating shaft, the connection stability between the electric spindle and the mounting shell is increased; the protective cover is arranged on the outside of the synchronous belt so that the protective cover protects the synchronous belt to increase the safety of the spindle mechanism; the two ends of the protective cover are respectively connected to the fixed plate and the fixed sleeve, so that the distance between the first synchronous wheel and the second synchronous wheel can be kept constant under the action of the protective cover, so as to increase the stability of the first synchronous wheel and the second synchronous wheel, and thereby keep the synchronous belt in a tensioned state.

[0023] Optionally, the mounting shell is provided with a rotating shaft penetrating the mounting plate, the output shaft of the first driving member is provided with a first gear, and the rotating shaft is provided with a second gear meshingly connected to the first gear.

[0024] By adopting the above technical solution, when the mounting shell is driven, the output shaft of the first driving member drives the first gear to rotate, so that the second gear rotates under the action of the first gear, the second gear drives the rotating shaft to rotate, and the rotating shaft drives the mounting shell to rotate, so as to realize driving the mounting shell to rotate.

[0025] Optionally, the mounting shell has a mounting section extending in a vertical direction and a connecting section extending in a horizontal direction, the rotating shaft is arranged in the connecting section, and the electric spindle is arranged in the mounting section and is located at the bottom of the connecting section, so that the electric spindle and the rotating shaft are coaxially arranged.

[0026] By adopting the above technical solution, since the electric spindle and the rotating shaft are coaxially arranged, the rotation position of the electric spindle can be easily controlled to simplify the control program of the spindle mechanism, thereby reducing the control cost of the spindle mechanism, while increasing the working stability of the spindle mechanism and reducing the failure rate of the spindle mechanism.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0028] 1. The spindle mechanism in the present application includes a mounting plate, a mounting shell arranged on the mounting plate, and an electric spindle arranged on the mounting shell, the mounting plate is provided with a first driving member for driving the mounting shell to rotate in a horizontal plane, a second driving member for driving the electric spindle to rotate in a vertical plane is arranged inside the mounting shell, the electric spindle is provided with a first synchronous wheel located inside the mounting shell, the output shaft of the second driving member is provided with a second synchronous wheel, the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission, an adjusting member for adjusting the second driving member is provided in the mounting shell, so that the distance between the first synchronous wheel and the second synchronous wheel can be adjusted, so that when the synchronous belt is installed, the distance between the first synchronous wheel and the second synchronous wheel can be kept in a small state, and then the synchronous belt is installed to the first synchronous wheel and the second synchronous wheel. After that, the second driving member is adjusted, and finally the synchronous belt is kept in a tensioned state, thereby achieving the effect of facilitating the installation of the synchronous belt, thereby reducing the difficulty of installing the synchronous belt, while improving the assembly efficiency of the spindle mechanism, and ensuring the transmission efficiency between the first synchronous wheel and the second synchronous wheel.

[0029] 2. The second driving member in the present application is provided with a fixing plate, and the fixing plate is provided with a waist-shaped hole whose length direction is parallel to the vertical direction. The mounting shell is provided with a fastener penetrated through the waist-shaped hole, and the adjusting member acts on the fixing plate. When installing the second driving member, the second driving member is first placed in the mounting shell, and then the fastener is penetrated through the waist-shaped hole, and the fastener is threadedly connected to the mounting shell to complete the pre-fixation of the second driving member, and then the adjusting member is operated to make the adjusting member adjust the fixing plate, and then make the fixing plate move in the vertical direction. At this time, the fastener and the fixing plate slide relative to each other, so that the fixing plate drives the second driving member to move, so that the synchronous belt is gradually in a tensioned state. Since the fixing plate is pre-fixed by the fastener first, and then the adjusting member is used to adjust the fixing plate, the stability of the second driving member is increased to ensure that the synchronous belt remains in a tensioned state for a long time.

[0030] 3. The adjusting member in the present application includes an adjusting member arranged on the mounting shell and an adjusting rod threadedly connected to the adjusting plate, the adjusting rod acts on the fixed plate so that when the adjusting rod rotates, the fixed plate moves in the vertical direction, and then the fixed plate drives the second driving member to move, so that the distance between the second synchronous wheel and the first synchronous wheel changes, so that the synchronous belt is gradually in a tensioned state, so as to realize the adjustment of the distance between the second synchronous wheel and the first synchronous wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0032] Figure 1 This is a structural schematic diagram of the spindle mechanism described in one implementation mode of the present application;

[0033] Figure 2 A partial structural schematic diagram of the spindle mechanism in one embodiment of the present application;

[0034] Figure 3 A cross-sectional view of the spindle mechanism according to one embodiment of the present application;

[0035] Figure 4 This is a schematic structural diagram of the spindle mechanism from another perspective in one implementation manner of the present application;

[0036] Figure 5 This is a schematic structural diagram of the housing described in one embodiment of the present application;

[0037] Figure 6 This is a schematic diagram of the connection structure between the first driving member and the mounting plate in one embodiment of the present application.

[0038] Reference numerals:

[0039] 1. Mounting plate; 11. First driving member; 111. First gear; 2. Mounting shell; 21. Shell; 211. Second driving member; 212. Second synchronous wheel; 213. Synchronous belt; 214. Fixed plate; 215. Waist-shaped hole; 216. Force plate; 217. Matching block; 218. Fixed rib; 219. Rotating shaft; 22. Cover; 221. Second gear; 3. Electric spindle; 31. Drill bit; 32. First synchronous wheel; 33. Rotating shaft; 331. Fixed sleeve; 4. Adjusting member; 41. Adjusting sheet; 411. Support section; 42. Adjusting rod; 43. Rotating rod; 44. Stop block; 5. Protective cover. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0042] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0043] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0045] Reference Figures 1 to 6, discloses a spindle mechanism for a five-axis machining center, comprising a mounting plate 1, a mounting shell 2 arranged on the mounting plate 1, and an electric spindle 3 arranged on the side of the mounting shell 2, the bottom of the electric spindle 3 has a drill bit 31, the mounting plate 1 is provided with a first driving member 11 for driving the mounting shell 2 to rotate in a horizontal plane, the mounting shell 2 is provided with a second driving member 211 for driving the electric spindle 3 to rotate in a vertical plane, the electric spindle 3 is provided with a first synchronous wheel 32 located inside the mounting shell 2, the output shaft of the second driving member 211 is provided with a second synchronous wheel 212, the first synchronous wheel 32 and the second synchronous wheel 212 are connected by a synchronous belt 213, and the mounting shell 2 is provided with an adjusting member 4 for adjusting the second driving member 211, so that the distance between the first synchronous wheel 32 and the second synchronous wheel 212 can be adjusted.

[0046] When installing the synchronous belt 213, first install the synchronous belt 213 to the outside of the first synchronous wheel 32 and the second synchronous wheel 212, and then operate the adjusting member 4, and then operate the adjusting member 4 to adjust the second driving member 211, so that the second driving member 211 drives the second synchronous wheel 212 to move, so that the distance between the second synchronous wheel 212 and the first synchronous wheel 32 gradually increases, so that the synchronous belt 213 is gradually tightened, so as to avoid the situation where the synchronous belt 213 is loose and affects the transmission efficiency between the first synchronous wheel 32 and the second synchronous wheel 212.

[0047] It can be understood that in the present application, by providing an adjusting member 4, the adjusting member 4 can adjust the distance between the first synchronous wheel 32 and the second synchronous wheel 212, so that when the synchronous belt 213 is installed, the distance between the first synchronous wheel 32 and the second synchronous wheel 212 can be kept at a small state, and then the synchronous belt 213 is installed to the first synchronous wheel 32 and the second synchronous wheel 212 before the second driving member 211 is adjusted, and finally the synchronous belt 213 is kept in a tensioned state to ensure the transmission efficiency between the first synchronous wheel 32 and the second synchronous wheel 212, thereby achieving the effect of facilitating the installation of the synchronous belt 213, reducing the difficulty of installing the synchronous belt 213, and improving the assembly efficiency of the spindle mechanism.

[0048] Better, refer to Figure 2 , Figure 3 and Figure 4 The first synchronous wheel 32 and the second synchronous wheel 212 are arranged in sequence along the vertical direction, and the second synchronous wheel 212 is located above the first synchronous wheel 32.

[0049] In a preferred embodiment, referring to Figure 2 , Figure 3 and Figure 4The second driving member 211 is provided with a fixing plate 214 , the fixing plate 214 is provided with a waist-shaped hole 215 whose length direction is parallel to the vertical direction, the mounting shell 2 is provided with a fastener penetrating the waist-shaped hole 215 , and the adjusting member 4 acts on the fixing plate 214 .

[0050] Specifically, when installing the second driving member 211, the second driving member 211 is first placed in the mounting shell 2, and then the fastener is inserted into the waist-shaped hole 215, and at the same time, the fastener is threadedly connected to the mounting shell 2 to complete the pre-fixation of the second driving member 211, and then the adjusting member 4 is operated to allow the adjusting member 4 to adjust the fixing plate 214, and then the fixing plate 214 moves in the vertical direction. At this time, the fastener and the fixing plate 214 slide relative to each other, so that the fixing plate 214 drives the second driving member 211 to move, so that the synchronous belt 213 is gradually in a tensioned state. Since the fixing plate 214 is pre-fixed by the fastener first, and then the fixing plate 214 is adjusted by the adjusting member 4, the stability of the second driving member 211 is increased to ensure that the synchronous belt 213 remains in a tensioned state for a long time.

[0051] The present application does not specifically limit the structure of the fastener. Preferably, the fastener is a bolt that passes through the waist-shaped hole 215 and is threadedly connected to the mounting shell 2 to increase the connection stability between the fixing plate 214 and the mounting shell 2. In other embodiments, the fastener may also be a screw.

[0052] The present application does not specifically limit the structure of the adjusting member 4, and the adjusting member 4 may adopt any one of the following embodiments:

[0053] Embodiment 1, in this embodiment, refer to Figure 2 and Figure 3 The adjusting member 4 includes an adjusting sheet 41 disposed on the mounting shell 2 and an adjusting rod 42 threadedly connected to the adjusting sheet 41 . The adjusting rod 42 acts on the fixing plate 214 so that when the adjusting rod 42 rotates, the fixing plate 214 moves in the vertical direction.

[0054] Specifically, when adjusting the second driving member 211, the adjusting rod 42 is rotated to make the adjusting rod 42 and the adjusting plate 41 rotate relative to each other, thereby making the fixing plate 214 move in the vertical direction, and the fixing plate 214 drives the second driving member 211 to move, so that the fixing plate 214 drives the second driving member 211 to move, thereby changing the distance between the second synchronous wheel 212 and the first synchronous wheel 32, so that the synchronous belt 213 is gradually in a tensioned state, so as to adjust the distance between the second synchronous wheel 212 and the first synchronous wheel 32.

[0055] The present application does not specifically limit the adjustment method of the adjustment rod 42 to the fixing plate 214. Preferably, refer to Figure 2 and Figure 3 The fixed plate 214 is extended to be provided with a force-bearing plate 216, and the adjusting plate 41 has a supporting section 411 located at the bottom of the force-bearing plate 216. The adjusting rod 42 is threadedly connected to the supporting section 411 and acts on the force-bearing plate 216. Then, when the adjusting rod 42 is rotated to increase the distance between the second synchronous wheel 212 and the first synchronous wheel 32, the adjusting rod 42 pushes the force-bearing plate 216 upward, so that the force-bearing plate 216 drives the fixed plate 214 to rise in the vertical direction, so as to increase the distance between the second synchronous wheel 212 and the first synchronous wheel 32. By arranging the adjusting rod 42 at the bottom of the force-bearing plate 216, the adjusting rod 42 is always subjected to the pressure of the fixed plate 214, so as to increase the connection stability between the adjusting rod 42 and the supporting section 411, so as to avoid the relative rotation of the adjusting rod 42 with the supporting section 411 under the action of vibration.

[0056] In other implementation examples, the support section 411 can also be arranged on the top of the fixed plate 214, and the adjustment rod 42 is passed through the support section 411 and threadedly connected to the fixed plate 214, so that the second synchronous wheel 212 moves upward in the vertical direction under the pulling action of the adjustment rod 42.

[0057] Better, refer to Figure 2 and Figure 3 Two adjusting plates 41 and two adjusting rods 42 are provided and are respectively located on two opposite sides of the fixing plate 214 , so that the forces on the two opposite sides of the fixing plate 214 are balanced, thereby increasing the stability of the second driving member 211 .

[0058] Embodiment 2, in this embodiment, refer to Figure 4 The adjusting member 4 includes a rotating rod 43 extending into the mounting shell 2 through the top of the mounting shell 2 and a stopper 44 arranged at the top of the rotating rod 43 and cooperating with the stopper of the mounting shell 2. One end of the bottom of the rotating rod 43 is threadedly connected to the fixed plate 214. When adjusting the distance between the second synchronous wheel 212 and the first synchronous wheel 32, it is only necessary to rotate the stopper 44, so that the stopper 44 drives the rotating rod 43 to rotate, so that the rotating rod 43 and the fixed plate 214 rotate relative to each other, so that the fixed plate 214 moves in the vertical direction, thereby adjusting the distance between the second synchronous wheel 212 and the first synchronous wheel 32, and thus achieving the effect of facilitating the adjustment of the tension of the synchronous belt 213. At the same time, as the use time of the spindle mechanism increases, the synchronous belt 213 may gradually become longer, and at this time, the stopper 44 can be directly adjusted to keep the synchronous belt 213 in a tensioned state.

[0059] Further, see Figure 4The fixed plate 214 is provided with a matching block 217, and the rotating rod 43 is threadedly connected to the matching block 217. That is to say, the rotating rod 43 is threadedly connected to the fixed plate 214 through the matching block 217 to avoid the situation where the thickness of the fixed plate 214 needs to be increased due to the connection between the rotating rod 43 and the fixed plate 214, so as to reduce the thickness of the fixed plate 214, thereby reducing the weight of the spindle mechanism, thereby achieving the effect of facilitating the movement of the spindle mechanism.

[0060] In a preferred embodiment, referring to Figure 2 and Figure 5 The inner wall of the mounting shell 2 is provided with a fixing rib 218, and the fastener is threadedly connected to the fixing rib 218, which realizes the connection between the fastener and the mounting shell 2 on the one hand, and on the other hand, the fixing rib 218 increases the structural strength of the mounting shell 2 to increase the service life of the spindle mechanism. The adjusting piece 41 is fixedly connected to the fixing rib 218 to increase the stability of the adjusting piece 41.

[0061] In a preferred embodiment, referring to Figure 2 , Figure 3 and Figure 4 The electric spindle 3 is provided with a rotating shaft 33 extending into the interior of the mounting shell 2, and the mounting shell 2 is provided with a fixed sleeve 331 sleeved on the outside of the rotating shaft 33, thereby increasing the connection stability between the electric spindle 3 and the mounting shell 2; a protective cover 5 is provided in the mounting shell 2 and is arranged on the outside of the synchronous belt 213, and the two ends of the protective cover 5 are respectively connected to the fixed plate 214 and the fixed sleeve 331, and the protective cover 5 is arranged on the outside of the synchronous belt 213 so that the protective cover 5 protects the synchronous belt 213 to increase the safety of the spindle mechanism, and at the same time, the distance between the first synchronous wheel 32 and the second synchronous wheel 212 can be kept constant under the action of the protective cover 5 to increase the stability of the first synchronous wheel 32 and the second synchronous wheel 212, thereby keeping the synchronous belt 213 in a tensioned state.

[0062] In a preferred embodiment, referring to Figure 6 The mounting shell 2 is provided with a rotating shaft 219 penetrating the mounting plate 1 , the output shaft of the first driving member 11 is provided with a first gear 111 , and the rotating shaft 219 is provided with a second gear 221 meshingly connected with the first gear 111 .

[0063] Specifically, when the mounting shell 2 is driven, the output shaft of the first driving member 11 drives the first gear 111 to rotate, so that the second gear 221 rotates under the action of the first gear 111, and the second gear 221 drives the rotating shaft 219 to rotate, and the rotating shaft 219 drives the mounting shell 2 to rotate, so as to drive the mounting shell 2 to rotate.

[0064] Further, see Figure 1 , Figure 2 and Figure 3The mounting shell 2 has a mounting section extending in a vertical direction and a connecting section extending in a horizontal direction. The rotating shaft 219 is arranged in the connecting section. The electric spindle 3 is arranged in the mounting section and is located at the bottom of the connecting section, so that the electric spindle 3 and the rotating shaft 219 are coaxially arranged, and then the rotation position of the electric spindle 3 can be easily controlled to simplify the control program of the spindle mechanism, thereby reducing the control cost of the spindle mechanism, and at the same time increasing the stability of the spindle mechanism during operation and reducing the failure rate of the spindle mechanism.

[0065] The present application does not impose any specific limitation on the connection method between the rotating shaft 219 and the mounting shell 2 . The rotating shaft 219 may be fixedly connected to the mounting shell 2 by means of screws, bolts or other structures, or may be integrally formed with the mounting shell 2 .

[0066] The present application does not specifically limit the structures of the first driving member 11 and the second driving member 211. Preferably, the first driving member 11 and the second driving member 211 are both stepping motors to achieve precise control of the rotation of the electric spindle 3. In other embodiments, the first driving member 11 and the second driving member 211 can also be pneumatic motors.

[0067] The present application does not specifically limit the structure of the mounting shell 2. Preferably, refer to Figure 1 and Figure 3 The mounting shell 2 includes a shell 21 and a cover 22 arranged on the shell 21. The shell 21 is open on one side away from the electric spindle 3. The cover 22 is detachably connected to the opening of the shell 21 to facilitate the installation of the second driving member 211 and the synchronous belt 213. At the same time, the cover 22 can seal the opening of the shell 21 to increase the cleanliness of the inside of the mounting shell 2.

[0068] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0069] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0070] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A spindle mechanism for a five-axis machining center, characterized in that: The invention comprises a mounting plate (1), a mounting shell (2) arranged on the mounting plate (1), and an electric spindle (3) arranged on the mounting shell (2); the mounting plate (1) is provided with a first driving member (11) for driving the mounting shell (2) to rotate in a horizontal plane; a second driving member (211) for driving the electric spindle (3) to rotate in a vertical plane is arranged inside the mounting shell (2); the electric spindle (3) is provided with a first synchronous wheel (32) located inside the mounting shell (2); the output shaft of the second driving member (211) is provided with a second synchronous wheel (212); the first synchronous wheel (32) and the second synchronous wheel (212) are connected in transmission via a synchronous belt (213); and an adjusting member (4) for adjusting the second driving member (211) is arranged in the mounting shell (2) so that the distance between the first synchronous wheel (32) and the second synchronous wheel (212) can be adjusted.

2. The spindle mechanism for a five-axis machining center according to claim 1, characterized in that: The second driving member (211) is provided with a fixing plate (214), the fixing plate (214) is provided with a waist-shaped hole (215) whose length direction is parallel to the vertical direction, the mounting shell (2) is provided with a fastener penetrating the waist-shaped hole (215), and the adjusting member (4) acts on the fixing plate (214).

3. The spindle mechanism for a five-axis machining center according to claim 2, characterized in that: The adjusting member (4) comprises an adjusting plate (41) arranged on the mounting shell (2) and an adjusting rod (42) threadedly connected to the adjusting plate (41); the adjusting rod (42) acts on the fixing plate (214) so ​​that when the adjusting rod (42) rotates, the fixing plate (214) moves in a vertical direction.

4. The spindle mechanism for a five-axis machining center according to claim 3, characterized in that: The fixing plate (214) is extended with a force-bearing plate (216), the adjusting plate (41) has a supporting section (411) located at the bottom of the force-bearing plate (216), and the adjusting rod (42) is threadedly connected to the supporting section (411) and acts on the force-bearing plate (216).

5. The spindle mechanism for a five-axis machining center according to claim 2, characterized in that: The adjusting member (4) comprises a rotating rod (43) extending into the mounting shell (2) through the top of the mounting shell (2) and a stop block (44) arranged at the top of the rotating rod (43) and cooperating with the mounting shell (2) to stop the rotating rod. One end of the bottom of the rotating rod (43) is threadedly connected to the fixing plate (214).

6. The spindle mechanism for a five-axis machining center according to claim 5, characterized in that: The fixing plate (214) is provided with a matching block (217), and the rotating rod (43) is threadedly connected to the matching block (217).

7. The spindle mechanism for a five-axis machining center according to claim 2, characterized in that: The inner wall of the mounting shell (2) is provided with a fixing rib (218), and the fastener is threadedly connected to the fixing rib (218).

8. The spindle mechanism for a five-axis machining center according to claim 2, characterized in that: The electric spindle (3) is provided with a rotating shaft (33) extending into the interior of the mounting shell (2); the mounting shell (2) is provided with a fixing sleeve (331) sleeved on the outside of the rotating shaft (33); the mounting shell (2) is provided with a protective cover (5) covering the outside of the synchronous belt (213); the two ends of the protective cover (5) are respectively connected to the fixing plate (214) and the fixing sleeve (331).

9. The spindle mechanism for a five-axis machining center according to claim 1, characterized in that: The mounting shell (2) is provided with a rotating shaft (219) penetrating the mounting plate (1); the output shaft of the first driving member (11) is provided with a first gear (111); and the rotating shaft (219) is provided with a second gear (221) meshingly connected to the first gear (111).

10. The spindle mechanism for a five-axis machining center according to claim 9, characterized in that: The mounting shell (2) has a mounting section extending in a vertical direction and a connecting section extending in a horizontal direction, the rotating shaft (219) is arranged in the connecting section, and the electric spindle (3) is arranged in the mounting section and is located at the bottom of the connecting section, so that the electric spindle (3) and the rotating shaft (219) are coaxially arranged.

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