Tool magazine for CNC machining center

Abstract

The present invention is applicable to the technical field of numerical control machining, and provides a tool magazine for numerical control machining centers, including a top plate, and also including: a storage module; a transfer module, wherein the transfer module includes a mounting plate, a hollow rotating shaft is mounted on the bottom of the mounting plate, a rotating plate is connected to the bottom of the hollow rotating shaft, two first guide seats are symmetrically arranged at the bottom of the rotating plate, an inner rotating shaft is arranged in the hollow rotating shaft, a turntable is connected to the bottom of the inner rotating shaft, two moving rods are symmetrically arranged on the turntable, an adjustment slide groove is provided on the turntable, a sliding column is arranged at one end of each moving rod close to the turntable, and the sliding column is slidably installed in the adjustment slide groove, and a clamping unit for clamping a tool is installed at one end of each moving rod away from the turntable. The device does not require complex pneumatic and hydraulic structures, and can realize tool replacement and storage by only using a motor as a drive, and is easy to operate and has good use effect.

Description

Technical Field

[0001] The invention belongs to the technical field of numerical control machining, and in particular relates to a tool magazine for a numerical control machining center. Background Art

[0002] CNC machining centers are highly efficient automated machine tools that are composed of mechanical equipment and CNC systems and are suitable for machining complex parts. A large number of tools are required during the machining process. By installing tools of different purposes on the tool magazine, the machining tools on the spindle can be changed through the automatic tool changer in one clamping, thus realizing multiple machining functions.

[0003] When the tool magazine in the prior art is in use, the tool can usually be disassembled, assembled and replaced only through the coordination of complex hydraulics, pneumatics and electrics. The overall structure is relatively complex, which is not conducive to subsequent maintenance. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a tool magazine for a CNC machining center, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The embodiment of the present invention is implemented as follows: a tool magazine for a numerical control machining center includes a top plate and also includes:

[0006] A storage module, the storage module is installed at the bottom of the top plate and is used to place a plurality of cutting tools;

[0007] The transfer module comprises a mounting plate mounted on the bottom of the top plate, a hollow rotating shaft is rotatably mounted on the bottom of the mounting plate, a rotating plate is connected to the bottom of the hollow rotating shaft, two first guide seats are symmetrically arranged at the bottom of the rotating plate, an inner rotating shaft is arranged through the hollow rotating shaft along its axial direction, a driving module for driving the hollow rotating shaft and the inner rotating shaft to rotate is also arranged on the mounting plate, the driving module is used to drive the inner rotating shaft to rotate continuously, and drive the hollow rotating shaft to rotate intermittently (that is, the time for the hollow rotating shaft to perform an intermittent rotation is equal to the time for the inner rotating shaft to rotate one circle), and the hollow The intermittent rotation period of the rotating shaft is the same as the rotation period of the inner rotating shaft. The top of the inner rotating shaft passes through the mounting plate and extends to the top of the mounting plate. The bottom of the inner rotating shaft passes through the rotating plate and extends to the bottom of the rotating plate. The bottom of the inner rotating shaft is connected to a rotating disk. Two moving rods are symmetrically arranged on the rotating disk, and the two moving rods are slidably installed in two first guide seats respectively. An adjusting slide groove is provided on the rotating disk. A sliding column is arranged at one end of each moving rod close to the rotating disk, and the sliding column is slidably installed in the adjusting slide groove. A clamping unit for clamping a tool is installed at one end of each moving rod away from the rotating disk.

[0008] When the hollow shaft rotates, the moving rod remains in a contracted state; when the hollow shaft does not rotate, the moving rod performs a telescopic movement.

[0009] A further technical solution is that the storage module includes a mounting column installed on the bottom of the top plate, a placing disk is rotatably installed on the bottom of the mounting column, and an adjusting unit for driving the placing disk to rotate is also installed on the mounting column, a plurality of placing grooves for placing tools are arranged in a circle at the edge of the placing disk, and two arc-shaped clamping blocks are symmetrically arranged at the edge of each of the placing grooves, the arc-shaped clamping blocks are slidably installed on the side wall of the placing disk along the circumference of the placing disk, and each of the arc-shaped clamping blocks is connected to the placing disk via a first spring, and an inclined surface is arranged at the opposite ends of the two arc-shaped clamping blocks in the same placing groove.

[0010] According to a further technical solution, the adjusting unit includes an adjusting motor mounted on a mounting column, and a second spur gear mounted on the top of the placing plate, wherein the output end of the adjusting motor is connected to the first spur gear, and the first spur gear is meshed with the second spur gear.

[0011] A further technical solution is that the driving module includes a driving motor installed on a mounting plate, the output end of the driving motor is connected to a driving shaft, the driving shaft is equipped with a complete driving gear and an incomplete driving gear, the incomplete driving gear is provided with teeth at 0° to 180°, the hollow rotating shaft and the inner rotating shaft are both equipped with transmission gears, the transmission gear on the inner rotating shaft is installed on the top thereof and meshes with the complete driving gear, the transmission gear on the hollow rotating shaft is intermittently meshed with the incomplete driving gear, and the rotating plate is also provided with a limiting unit for limiting the hollow rotating shaft.

[0012] A further technical solution is that when the incomplete drive gear is engaged with the transmission gear on the hollow shaft, the limiting unit does not contact the hollow shaft, and the hollow shaft can rotate synchronously with the incomplete drive gear; when the incomplete drive gear is not engaged with the transmission gear on the hollow shaft, the limiting unit contacts the hollow shaft and limits the hollow shaft, and the hollow shaft is fixed and cannot rotate.

[0013] A further technical solution is that the limit unit includes two second guide seats installed at the bottom of the mounting plate, and a diamond block sleeved on the driving shaft, and the two second guide seats are symmetrically arranged on both sides of the driving shaft, two push rods are symmetrically arranged on both sides of the diamond block, and the two push rods are respectively slidably installed on the two second guide seats, and a number of second springs are also arranged between the push rods and the second guide seats, the elastic force of the second springs will make the push rods always abut against the side walls of the diamond blocks, the push rods are connected to a limiting rack at one end close to the hollow rotating shaft, and the side walls of the hollow rotating shaft are provided with tooth grooves matching the limiting rack.

[0014] A further technical solution is that the clamping unit includes an electric telescopic rod and a clamping block, the electric telescopic rod is installed on the moving rod, two clamping blocks are provided, and the two clamping blocks are symmetrically installed at the ends of the moving rod and can slide, the telescopic end of the electric telescopic rod is installed with a connecting seat, and two adjusting connecting rods are symmetrically arranged on the connecting seat, and the ends of the two adjusting connecting rods away from the connecting seat are respectively hinged to the two clamping blocks.

[0015] A tool magazine for a CNC machining center provided by an embodiment of the present invention, when in use, a plurality of tools are placed on the storage module. When the tool is to be replaced, the driving module drives the hollow rotating shaft and the inner rotating shaft to rotate synchronously (rotate only 90°), so that one of the moving rods is rotated to the main shaft, and at this time, the other moving rod will be located at the storage module. Then the driving module will drive the inner rotating shaft to rotate alone (rotate 180°), and at this time the rotating plate is fixed, so that the turntable and the rotating plate are relatively displaced, so that the adjusting slide groove and the sliding column are relatively displaced, and through the cooperation of the adjusting slide groove and the sliding column, both moving rods will be extended and retracted once, so that the tool on the main shaft is removed and the tool to be used later is clamped. Then the driving module drives the hollow rotating shaft and the inner rotating shaft to rotate synchronously again (rotate 180°), so that the removed tool is transferred to the storage module, and the tool to be used is transferred to the position close to the main shaft. Then the drive module will drive the inner shaft to rotate again (180°), control the moving rod to perform a telescopic movement, place the removed tool in the storage module, and move the tool to be used to the bottom of the spindle for installation. Finally, the drive module drives the hollow shaft and the inner shaft to rotate synchronously again (only 90°), so that the transfer module is in a shutdown state, and the corresponding tool can be used for processing. The device does not require complex pneumatic and hydraulic structures, and only uses a motor as a drive to achieve tool replacement and storage. It is easy to operate and has good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the structure of a tool magazine for a CNC machining center provided by an embodiment of the present invention;

[0017] Figure 2 A schematic structural diagram of a storage module in a tool magazine for a CNC machining center provided by an embodiment of the present invention;

[0018] Figure 3 A schematic diagram of the structure of a transfer module in a tool magazine for a CNC machining center provided by an embodiment of the present invention;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure from an upward perspective;

[0020] Figure 5 for Figure 3 A in the enlarged view;

[0021] Figure 6 A schematic structural diagram of a limit unit in a tool magazine for a CNC machining center provided by an embodiment of the present invention;

[0022] Figure 7 A schematic structural diagram of the cooperation between a hollow rotating shaft and a driving shaft in a tool magazine for a CNC machining center provided by an embodiment of the present invention.

[0023] In the accompanying drawings: top plate 1; storage module 2; mounting column 21; placement plate 22; placement groove 23; arc-shaped block 24; inclined surface 241; first spring 25; adjustment unit 26; adjustment motor 261; first spur gear 262; second spur gear 263; transfer module 3; mounting plate 31; hollow shaft 32; rotating plate 33; inner shaft 34; turntable 35; first guide seat 36; moving rod 37; adjustment slide groove 38; sliding column 39; drive module 4; drive motor 41; drive shaft 42; full drive gear 43; transmission gear 44; incomplete drive gear 45; limit unit 5; diamond block 51; push rod 52; second guide seat 53; second spring 54; limit rack 55; tooth groove 56; clamping unit 6; electric telescopic rod 61; connecting seat 62; clamping block 63; adjustment connecting rod 64. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0025] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, a tool magazine for a CNC machining center provided by an embodiment of the present invention includes a top plate 1 and also includes:

[0027] A storage module 2, which is installed at the bottom of the top plate 1 and is used to place a plurality of cutting tools;

[0028] The transfer module 3 includes a mounting plate 31 mounted on the bottom of the top plate 1, a hollow shaft 32 is rotatably mounted on the bottom of the mounting plate 31, a rotating plate 33 is connected to the bottom of the hollow shaft 32, two first guide seats 36 are symmetrically arranged at the bottom of the rotating plate 33, an inner shaft 34 is arranged along the axial direction of the hollow shaft 32, and a driving module 4 for driving the hollow shaft 32 and the inner shaft 34 to rotate is also arranged on the mounting plate 31, the driving module 4 is used to drive the inner shaft 34 to rotate continuously, and drive the hollow shaft 32 to rotate intermittently (that is, the time for the hollow shaft 32 to rotate once is equal to the time for the inner shaft 34 to rotate once), and the hollow shaft 32 The intermittent rotation cycle is the same as the rotation cycle of the inner shaft 34. The top of the inner shaft 34 passes through the mounting plate 31 and extends to the top of the mounting plate 31. The bottom of the inner shaft 34 passes through the rotating plate 33 and extends to the bottom of the rotating plate 33. The bottom of the inner shaft 34 is connected to a turntable 35. Two moving rods 37 are symmetrically arranged on the turntable 35, and the two moving rods 37 are slidably installed in two first guide seats 36 respectively. An adjusting slot 38 is provided on the turntable 35. A sliding column 39 is provided at one end of each moving rod 37 close to the turntable 35, and the sliding column 39 is slidably installed in the adjusting slot 38. A clamping unit 6 for clamping a tool is installed at one end of each moving rod 37 away from the turntable 35.

[0029] When the hollow rotating shaft 32 rotates, the moving rod 37 remains in a retracted state; when the hollow rotating shaft 32 does not rotate, the moving rod 37 performs a telescopic movement.

[0030] In the embodiment of the present invention, when in use, a variety of tools are placed on the storage module 2. When the tool is to be replaced, the driving module 4 drives the hollow shaft 32 and the inner shaft 34 to rotate synchronously (rotate only 90°), so that one of the moving rods 37 is rotated to the main shaft, and at this time, the other moving rod 37 will be located at the storage module 2. Then the driving module 4 will drive the inner shaft 34 to rotate alone (rotate 180°), and at this time the rotating plate 33 is fixed, so that the rotating disk 35 and the rotating plate 33 are relatively displaced, so that the adjusting slot 38 and the sliding column 39 are relatively displaced, and through the cooperation of the adjusting slot 38 and the sliding column 39, the two moving rods 37 will be extended and retracted once, so that the tool on the main shaft is removed and the tool to be used later is clamped. Then the driving module 4 drives the hollow shaft 32 and the inner shaft 34 to rotate synchronously again (rotate 180°), so that the removed tool is transferred to the storage module 2, and the tool to be used is transferred to the position close to the main shaft. Then the driving module 4 will drive the inner rotating shaft 34 to rotate independently (rotate 180°) again, and by controlling the moving rod 37 to perform a telescopic movement, the removed tool is placed in the storage module 2, and the tool to be used is moved to the bottom of the main shaft for installation. Finally, the driving module 4 drives the hollow rotating shaft 32 and the inner rotating shaft 34 to rotate synchronously (rotate only 90°), so that the transfer module 3 is in a stopped state, and the corresponding tool can be used for processing.

[0031] like Figure 1 and Figure 2 As shown, as a preferred embodiment of the present invention, the storage module 2 includes a mounting column 21 installed at the bottom of the top plate 1, a placement plate 22 is rotatably mounted at the bottom of the mounting column 21, and an adjusting unit 26 for driving the placement plate 22 to rotate is also mounted on the mounting column 21, a plurality of placement grooves 23 for placing tools are arranged in a circle at the edge of the placement plate 22, and two arc-shaped clamping blocks 24 are symmetrically arranged at the edge of each of the placement grooves 23, the arc-shaped clamping blocks 24 are slidably installed on the side wall of the placement plate 22 along the circumferential direction of the placement plate 22, and each of the arc-shaped clamping blocks 24 is connected to the placement plate 22 through a first spring 25, and an inclined surface 241 is arranged at the opposite ends of the two arc-shaped clamping blocks 24 in the same placement groove 23.

[0032] In the embodiment of the present invention, when no external force is applied, due to the elastic force of the first spring 25, the two arc-shaped clamping blocks 24 located at the same placement groove 23 will abut against each other, thereby stably fixing the tool in the placement groove 23. When the tool in the placement groove 23 is to be taken out, it is only necessary to clamp the tool by the clamping unit 6, and then pull it to the side away from the center of the circle of the placement disk 22, and the two arc-shaped clamping blocks 24 will open to both sides through the compression of the inclined surface 241 on the inner side of the arc-shaped clamping block 24 by the tool, so that the tool can be taken out. When the tool is to be placed in the placement groove 23, it is only necessary to push the tool into the designated placement groove 23 along the radial direction of the placement disk 22, and the two arc-shaped clamping blocks 24 can also be opened to both sides through the compression of the inclined surface 241 on the outer side of the arc-shaped clamping block 24 by the tool, so that the tool can be placed in the placement groove 23.

[0033] like Figure 2 As shown, as a preferred embodiment of the present invention, the adjusting unit 26 includes an adjusting motor 261 installed on the mounting column 21, and a second spur gear 263 installed on the top of the placement plate 22, and the output end of the adjusting motor 261 is connected to the first spur gear 262, and the first spur gear 262 is meshed with the second spur gear 263.

[0034] In the embodiment of the present invention, when in use, it is only necessary to start the adjustment motor 261, and the adjustment motor 261 can drive the first spur gear 262 to rotate. Through the cooperation of the first spur gear 262 and the second spur gear 263, the placement plate 22 can be driven to rotate synchronously, thereby rotating different placement slots 23 to the specified position to grab or place the tool.

[0035] like Figure 1 , Figure 3 , Figure 6 and Figure 7 As shown, as a preferred embodiment of the present invention, the driving module 4 includes a driving motor 41 installed on the mounting plate 31, the output end of the driving motor 41 is connected to the driving shaft 42, the driving shaft 42 is installed with a complete driving gear 43 and an incomplete driving gear 45, the incomplete driving gear 45 is provided with teeth at 0° to 180°, the hollow shaft 32 and the inner shaft 34 are both installed with a transmission gear 44, the transmission gear 44 on the inner shaft 34 is installed on the top thereof and meshes with the complete driving gear 43, the transmission gear 44 on the hollow shaft 32 is intermittently meshed with the incomplete driving gear 45, and the rotating plate 33 is also provided with a limiting unit 5 for limiting the hollow shaft 32;

[0036] When the incomplete driving gear 45 is meshed with the transmission gear 44 on the hollow rotating shaft 32, the limiting unit 5 is not in contact with the hollow rotating shaft 32, and the hollow rotating shaft 32 can rotate synchronously with the incomplete driving gear 45; when the incomplete driving gear 45 is not meshed with the transmission gear 44 on the hollow rotating shaft 32, the limiting unit 5 is in contact with the hollow rotating shaft 32 and limits the hollow rotating shaft 32, and the hollow rotating shaft 32 is fixed and cannot rotate.

[0037] In the embodiment of the present invention, when in use, the driving motor 41 can drive the driving shaft 42 to rotate, and the driving shaft 42 can drive the complete driving gear 43 and the incomplete driving gear 45 to rotate synchronously, and the complete driving gear 43 is always engaged with the transmission gear 44 on the top of the inner shaft 34, thereby driving the inner shaft 34 to rotate continuously. The incomplete driving gear 45 is intermittently engaged with the transmission gear 44 on the hollow shaft 32, and the incomplete driving gear 45 is engaged with the transmission gear 44 on the hollow shaft 32 once every rotation of the driving shaft 42, and each engagement can drive the hollow shaft 32 to rotate 180°. Specifically, when the complete driving gear 43 and the incomplete driving gear 45 are engaged with the corresponding transmission gear 44 at the same time, the hollow shaft 32 and the inner shaft 34 will keep rotating synchronously, and at this time, the relative position of the rotating plate 33 and the rotating disk 35 remains unchanged, and the moving rod 37 will not slide along the first guide seat 36. This process corresponds to the process of tool transfer, that is, the tool is transferred from the storage module 2 to the spindle, or the tool is transferred from the spindle to the storage module 2. In this process, the moving rod 37 is in a retracted state, so that the tool is close to the rotating plate 33, ensuring that it will not collide with the parts on the machine tool during the transfer process. When the full drive gear 43 is engaged with the corresponding transmission gear 44, and the incomplete drive gear 45 is not engaged with the corresponding transmission gear 44, the rotating plate 33 is fixed by the limit unit 5 and remains in place (at this time, the two groups of clamping units 6 are usually located at the placement groove 23 and the spindle respectively), and the turntable 35 continues to rotate 180°, so that the adjustment slot 38 and the sliding column 39 on the turntable 35 are relatively displaced. Through the cooperation of the adjustment slot 38 and the sliding column 39, the moving rod 37 will be extended and retracted once, so that the tool is pushed into the placement slot 23 for placement or pushed to the spindle for installation.

[0038] like Figure 3 , Figure 6 and Figure 7As shown, as a preferred embodiment of the present invention, the limiting unit 5 includes two second guide seats 53 installed at the bottom of the mounting plate 31, and a diamond block 51 sleeved on the driving shaft 42, and the two second guide seats 53 are symmetrically arranged on both sides of the driving shaft 42, and two push rods 52 are symmetrically arranged on both sides of the diamond block 51, and the two push rods 52 are respectively slidably installed on the two second guide seats 53, and a plurality of second springs 54 are also arranged between the push rods 52 and the second guide seats 53, the elastic force of the second springs 54 will make the push rods 52 always abut against the side walls of the diamond blocks 51, and the end of the push rod 52 close to the hollow rotating shaft 32 is connected to the limiting rack 55, and the side wall of the hollow rotating shaft 32 is provided with a tooth groove 56 matching the limiting rack 55.

[0039] In the embodiment of the present invention, when the incomplete driving gear 45 is not meshed with the corresponding transmission gear 44, the push rod 52 will abut against the small end of the diamond block 51, and the second guide seat 53 will drive the limit rack 55 to engage with the tooth groove 56 on the hollow shaft 32, so that the hollow shaft 32 cannot rotate. When the incomplete driving gear 45 is meshed with the corresponding transmission gear 44, the push rod 52 will abut against the large end of the diamond block 51. During this process, the diamond block 51 will push the push rod 52 to move away from the driving shaft 42, and the second guide seat 53 will drive the limit rack 55 to move synchronously, so that the limit rack 55 is disengaged from the tooth groove 56, and the hollow shaft 32 can rotate.

[0040] like Figure 3 and Figure 5 As shown, as a preferred embodiment of the present invention, the clamping unit 6 includes an electric telescopic rod 61 and a clamping block 63, the electric telescopic rod 61 is installed on the moving rod 37, two clamping blocks 63 are provided, and the two clamping blocks 63 are symmetrically installed at the ends of the moving rod 37 and can slide, the telescopic end of the electric telescopic rod 61 is installed with a connecting seat 62, and two adjusting connecting rods 64 are symmetrically arranged on the connecting seat 62, and the ends of the two adjusting connecting rods 64 away from the connecting seat 62 are respectively hinged to the two clamping blocks 63.

[0041] In the embodiment of the present invention, when in use, it is only necessary to control the electric telescopic rod 61 to retract, and the electric telescopic rod 61 can drive the connecting seat 62 to move synchronously, and the connecting seat 62 can drive the two clamping blocks 63 to move synchronously toward or in the opposite direction by adjusting the connecting rod 64. Specifically, when the electric telescopic rod 61 is extended, the two clamping blocks 63 will move away from each other; when the electric telescopic rod 61 is retracted, the two clamping blocks 63 will move toward each other. Thus, the tool can be clamped and released.

[0042] Working principle: When the tool needs to be replaced, the drive motor 41 is started, and the drive motor 41 can drive the drive shaft 42 to rotate. The drive shaft 42 can drive the complete drive gear 43 and the incomplete drive gear 45 to rotate synchronously. The complete drive gear 43 and the incomplete drive gear 45 respectively drive the hollow shaft 32 and the inner shaft 34 to keep rotating synchronously (only rotate 90°) through the corresponding transmission gear 44, thereby rotating one of the moving rods 37 to the main shaft. At this time, the other moving rod 37 will be located at the storage module 2. As the drive shaft 42 continues to rotate, the incomplete drive gear 45 no longer meshes with the corresponding transmission gear 44, and the rotating plate 33 is fixed by the limiting unit 5 and remains in place. The drive shaft 42 drives the inner rotating shaft 34 to rotate independently (rotate 180°), so that the turntable 35 and the rotating plate 33 are relatively displaced, so that the adjustment slot 38 and the sliding column 39 are relatively displaced. Through the cooperation of the adjustment slot 38 and the sliding column 39, the two moving rods 37 will be extended and retracted once, so that the tool on the main shaft is removed and the tool to be used later is clamped. Then the driving module 4 drives the hollow rotating shaft 32 and the inner rotating shaft 34 to rotate synchronously again (rotate 180°), so that the removed tool is transferred to the storage module 2, and the tool to be used is transferred to the position close to the main shaft. Then the driving module 4 will drive the inner rotating shaft 34 to rotate independently again (rotate 180°), and by controlling the moving rod 37 to perform a telescopic movement, the removed tool is placed in the storage module 2, and the tool to be used is moved to the bottom of the main shaft for installation. Finally, the driving module 4 drives the hollow rotating shaft 32 and the inner rotating shaft 34 to rotate synchronously again (only rotate 90°), so that the transfer module 3 is in a stopped state, and the corresponding tool can be used for processing.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool magazine for a CNC machining center, comprising a top plate, characterized in that: Also includes: A storage module, the storage module is installed at the bottom of the top plate and is used to place a plurality of cutting tools; A transfer module, the transfer module includes a mounting plate installed at the bottom of the top plate, a hollow rotating shaft is rotatably installed at the bottom of the mounting plate, the bottom of the hollow rotating shaft is connected to a rotating plate, two first guide seats are symmetrically arranged at the bottom of the rotating plate, an inner rotating shaft is penetrated through the hollow rotating shaft along its axial direction, and a driving module for driving the hollow rotating shaft and the inner rotating shaft to rotate is also arranged on the mounting plate, the driving module is used to drive the inner rotating shaft to rotate continuously and drive the hollow rotating shaft to rotate intermittently, and the intermittent rotation period of the hollow rotating shaft is consistent with the rotation period of the inner rotating shaft The rotation period is the same, the top of the inner rotating shaft passes through the mounting plate and extends to the top of the mounting plate, the bottom of the inner rotating shaft passes through the rotating plate and extends to the bottom of the rotating plate, the bottom of the inner rotating shaft is connected to a rotating disk, two moving rods are symmetrically arranged on the rotating disk, and the two moving rods are slidably installed in two first guide seats respectively, an adjusting slide groove is provided on the rotating disk, a sliding column is arranged at one end of each moving rod close to the rotating disk, and the sliding column is slidably installed in the adjusting slide groove, and a clamping unit for clamping a tool is installed at one end of each moving rod away from the rotating disk; When the hollow shaft rotates, the moving rod remains in a contracted state; when the hollow shaft does not rotate, the moving rod performs a telescopic movement; The driving module comprises a driving motor mounted on a mounting plate, the output end of the driving motor is connected to a driving shaft, the driving shaft is mounted with a complete driving gear and an incomplete driving gear, the incomplete driving gear is provided with teeth at 0° to 180°, the hollow rotating shaft and the inner rotating shaft are both mounted with transmission gears, the transmission gear on the inner rotating shaft is mounted on the top thereof and meshes with the complete driving gear, the transmission gear on the hollow rotating shaft is intermittently meshed with the incomplete driving gear, and the rotating plate is further provided with a limiting unit for limiting the hollow rotating shaft; When the incomplete driving gear is meshed with the transmission gear on the hollow shaft, the limiting unit does not contact the hollow shaft, and the hollow shaft can rotate synchronously with the incomplete driving gear; when the incomplete driving gear is not meshed with the transmission gear on the hollow shaft, the limiting unit contacts the hollow shaft and limits the hollow shaft, and the hollow shaft is fixed and cannot rotate.

2. The tool magazine for a CNC machining center according to claim 1, characterized in that: The storage module includes a mounting column installed at the bottom of the top plate, a placing disk is rotatably installed at the bottom of the mounting column, and an adjusting unit for driving the placing disk to rotate is also installed on the mounting column, a plurality of placing grooves for placing tools are arranged in a circle at the edge of the placing disk, and two arc-shaped clamping blocks are symmetrically arranged at the edge of each of the placing grooves, and the arc-shaped clamping blocks are slidably installed on the side wall of the placing disk along the circumference of the placing disk, and each of the arc-shaped clamping blocks is connected to the placing disk via a first spring, and an inclined surface is arranged at the opposite ends of the two arc-shaped clamping blocks in the same placing groove.

3. The tool magazine for a CNC machining center according to claim 2, characterized in that: The adjusting unit comprises an adjusting motor mounted on a mounting column and a second spur gear mounted on the top of the placing plate, the output end of the adjusting motor is connected to the first spur gear, and the first spur gear is meshed with the second spur gear.

4. The tool magazine for a CNC machining center according to claim 1, characterized in that: The limiting unit includes two second guide seats installed on the bottom of the mounting plate, and a diamond block sleeved on the driving shaft, and the two second guide seats are symmetrically arranged on both sides of the driving shaft, and two push rods are symmetrically arranged on both sides of the diamond block, and the two push rods are respectively slidably installed on the two second guide seats, and a plurality of second springs are also arranged between the push rods and the second guide seats, and the elastic force of the second springs will make the push rods always abut against the side walls of the diamond blocks, and the end of the push rod close to the hollow rotating shaft is connected to the limiting rack, and the side walls of the hollow rotating shaft are provided with tooth grooves matching the limiting rack.

5. The tool magazine for a CNC machining center according to claim 1, characterized in that: The clamping unit includes an electric telescopic rod and a clamping block. The electric telescopic rod is installed on the moving rod. Two clamping blocks are provided, and the two clamping blocks are symmetrically installed at the ends of the moving rod and can slide. A connecting seat is installed at the telescopic end of the electric telescopic rod. Two adjusting connecting rods are symmetrically arranged on the connecting seat. The ends of the two adjusting connecting rods away from the connecting seat are respectively hinged to the two clamping blocks.

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