Pneumatic tool changer assembly and pneumatic tool changer

Abstract

The embodiment of the present application provides a pneumatic tool changing assembly and a pneumatic tool changing instrument, the pneumatic tool changing assembly comprises a mounting base, a overrunning clutch and a pneumatic motor, the overrunning clutch is installed on the mounting base, and the overrunning clutch is provided with an engaging part. The pneumatic motor is connected to one side of the overrunning clutch away from the engaging part, the pneumatic motor and the overrunning clutch are distributed along the height direction of the pneumatic tool changing assembly, and the rotation of the pneumatic motor is suitable for driving the overrunning clutch to rotate. Then, the engaging part can be engaged with a broach rod to realize the dismounting or mounting of the broach rod by rotating the pneumatic motor and driving the overrunning clutch to rotate. In this way, the tool changing mode of the pneumatic tool changing assembly is simple, and the tool changing efficiency of the pneumatic tool changing assembly can be improved.

Description

Technical Field

[0001] This invention relates to the field of tool changing equipment technology, and more specifically, to a pneumatic tool changing assembly and a pneumatic tool changing device. Background Technology

[0002] A milling machine is a machine tool that uses cutting tools to mill workpieces. Milling machines generally use a drawbar to fix the cutting tool to the machine base to ensure the stability of the cutting tool connection to the machine base.

[0003] However, the method of disassembling or installing the broaching bar on the milling machine of the relevant technology is difficult, and the disassembly and assembly efficiency of the broaching bar is low. Summary of the Invention

[0004] The present invention provides a pneumatic tool changer assembly and a pneumatic tool changer to improve at least one of the above-mentioned problems.

[0005] The embodiments of the present invention achieve the above objectives through the following technical solutions.

[0006] In a first aspect, embodiments of the present invention provide a pneumatic tool changer assembly, which includes a mounting base, an overrunning clutch, and a pneumatic motor. The overrunning clutch is mounted on the mounting base and has an engagement portion. The pneumatic motor is connected to the side of the overrunning clutch opposite to the engagement portion. The pneumatic motor and the overrunning clutch are distributed along the height direction of the pneumatic tool changer assembly, and the rotation of the pneumatic motor is adapted to drive the overrunning clutch to rotate.

[0007] In some embodiments, the overrunning clutch includes a connecting housing, a clutch main shaft, and an inner rotor, with the connecting housing mounted on a mounting base. The clutch main shaft is mounted on the connecting housing, with the engagement portion located on the side of the clutch main shaft opposite to the pneumatic motor, and the rotation of the pneumatic motor adapted to drive the clutch main shaft to rotate. The inner rotor is mounted on the connecting housing and surrounds the clutch main shaft, and the rotation of the clutch main shaft adapted to drive the inner rotor to rotate synchronously.

[0008] In some embodiments, the overrunning clutch also includes a locating pin, which is mounted on the connecting housing and spaced apart from the inner rotor.

[0009] In some embodiments, the mounting base includes a support base and a movable base, both of which are mounted on the movable base. The pneumatic tool changer assembly includes a cylinder mounted on the movable base and the support base, and the cylinder is adapted to move the movable base toward the support base.

[0010] In some embodiments, the piston shaft of the cylinder is mounted on a movable seat and a support seat, and the movement of the cylinder body relative to the piston shaft is adapted to drive the movable seat to move towards the support seat.

[0011] In some embodiments, the mounting base further includes a guide post connected to the movable base and the support base. The guide post and the piston shaft are distributed along the length of the mounting base, and the guide post passes through the movable base when the movable base moves toward the support base.

[0012] In some embodiments, the mounting base further includes a first reset member and a second reset member. The first reset member is sleeved on the outer periphery of the piston shaft and connected to the movable seat and the support seat. The second reset member is sleeved on the outer periphery of the guide post and connected to the movable seat and the support seat.

[0013] In some embodiments, the mounting base further includes a movable limiting member and a mating member, which are distributed along the height direction. The movable limiting member is located on the surface of the movable base facing the support base, and the mating member is located on the surface of the support base facing the movable base. The movable limiting member and the mating member limit each other in a limiting engagement.

[0014] In some embodiments, the pneumatic tool changer assembly further includes a pneumatic triplet, a first switching valve, a second switching valve, and a circulation pipe. The pneumatic triplet is connected to the circulation pipe and located at the inlet end of the first switching valve. The first switching valve is connected to the circulation pipe and located at the outlet end of the pneumatic triplet and the inlet end of the pneumatic motor. The second switching valve is connected to the circulation pipe and located at the inlet end of the cylinder.

[0015] Secondly, embodiments of the present invention provide a pneumatic tool changer, which includes a base and a pneumatic tool changer assembly provided in any of the above embodiments, the pneumatic tool changer assembly being mounted on the base.

[0016] The pneumatic tool changer and pneumatic tool changer provided in this invention include a mounting base, an overrunning clutch, and a pneumatic motor. The overrunning clutch is mounted on the mounting base and has an engagement portion. The pneumatic motor is connected to the side of the overrunning clutch opposite to the engagement portion. The pneumatic motor and the overrunning clutch are distributed along the height direction of the pneumatic tool changer. The rotation of the pneumatic motor is adapted to drive the overrunning clutch to rotate. By rotating the pneumatic motor, the overrunning clutch can be driven to rotate, thereby allowing the engagement portion to engage with the drawbar to achieve the disassembly or installation of the drawbar. Thus, the tool changing method of the pneumatic tool changer is simple, which helps to improve the tool changing efficiency of the pneumatic tool changer. Furthermore, since the pneumatic motor only outputs torque to drive the overrunning clutch to rotate when it reaches a certain speed, this helps to reduce the time the pneumatic motor bears the overrunning clutch, reducing the risk of damage from prolonged overrunning and thus helping to extend the service life of the pneumatic motor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the pneumatic tool changer provided in an embodiment of the present invention is shown.

[0019] Figure 2 It shows Figure 1 A schematic diagram of the overrunning clutch in a pneumatic tool changer.

[0020] Figure 3 It shows Figure 2 A longitudinal sectional view of the overrunning clutch.

[0021] Figure 4 It shows Figure 2 A partial structural diagram of the overrunning clutch.

[0022] Figure 5 A partial structural schematic diagram of the pneumatic tool changer assembly provided in an embodiment of the present invention is shown.

[0023] Figure 6 It shows Figure 5 The schematic diagram of the airflow transmission path of the pneumatic tool changer assembly. Detailed Implementation

[0024] To enable those skilled in the art to better understand the present invention, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] Please see Figure 1 This invention provides a pneumatic tool changer assembly 10, which includes a mounting base 11, an overrunning clutch 12, and a pneumatic motor 13. The overrunning clutch 12 is mounted on the mounting base 11 and has an engagement portion 121. The overrunning clutch 12 helps improve the stability of the pneumatic tool changer assembly 10, thereby improving the stability of the pneumatic tool changer assembly 10 when removing or installing tools.

[0027] In some embodiments, the pneumatic motor 13 is connected to the side of the overrunning clutch 12 opposite to the engagement portion 121. The pneumatic motor 13 and the overrunning clutch 12 are distributed along the height direction of the pneumatic tool changer assembly 10. The rotation of the pneumatic motor 13 is adapted to drive the overrunning clutch 12 to rotate. Thus, by rotating the pneumatic motor 13, the overrunning clutch 12 can be driven to rotate, thereby allowing the engagement portion 121 to engage with the drawbar to achieve the disassembly or installation of the drawbar. In this way, the tool changing method of the pneumatic tool changer assembly 10 is simple, which helps to improve the tool changing efficiency of the pneumatic tool changer assembly 10 and improve the safety of tool changing.

[0028] In addition, since the pneumatic motor 13 only outputs torque to drive the overrunning clutch 12 to rotate when it reaches a certain speed, this helps to avoid the pneumatic motor 13 being overloaded by the overrunning clutch 12 for a long time, thereby helping to improve the service life of the pneumatic motor 13.

[0029] Among them, the pneumatic motor 13 can be a vane-type pneumatic motor. Vane-type pneumatic motors have the characteristics of simple structure, small size and easy operation. Vane-type pneumatic motors help to reduce the use cost of pneumatic tool changer 10 and reduce the size of pneumatic tool changer 10.

[0030] For example, when the vane motor is not started, the vanes are usually in a closed or retracted state. When the vane motor starts, its speed gradually increases, and the vanes, subjected to centrifugal force, resist the internal pressure and elastic force, and begin to expand. As the centrifugal force gradually increases, the internal resistance and elastic force of the vanes are overcome, and the vanes begin to unfold outward, with the degree of expansion being proportional to the speed. When the speed of the vane motor reaches a threshold, the vanes can fully expand and enter a stable working state. At this point, the vanes can provide the required output power and torque, thereby driving the overrunning clutch 12 to rotate.

[0031] Thus, the vane-type air motor helps improve the stability of the pneumatic tool changer assembly 10 and helps ensure the normal operation of the pneumatic tool changer assembly 10.

[0032] Please refer to the following: Figure 2 and Figure 3 In some embodiments, the overrunning clutch 12 may include a connecting housing 122, a clutch main shaft 123, and an inner rotor 124. The connecting housing 122 is mounted on the mounting base 11, and both the clutch main shaft 123 and the inner rotor 124 are mounted on the connecting housing 122. In this way, the connecting housing 122 can provide a certain degree of protection for the clutch main shaft 123 and the inner rotor 124, helping to reduce the risk of damage to the exposed clutch main shaft 123 and the inner rotor 124.

[0033] In some embodiments, the engagement part 121 is located on the side of the clutch main shaft 123 away from the pneumatic motor 13, and the inner rotor 124 surrounds the clutch main shaft 123. The rotation of the pneumatic motor 13 is adapted to drive the clutch main shaft 123 to rotate, and the rotation of the clutch main shaft 123 is adapted to drive the inner rotor 124 to rotate synchronously. This helps to ensure the normal operation of the pneumatic tool changer assembly 10.

[0034] For example, the pneumatic motor 13 can be connected to the connecting housing 122 and spaced apart from the clutch main shaft 123. When the pneumatic motor 13 starts and its speed reaches the threshold of the pneumatic motor 13, the pneumatic motor 13 can provide the required output power and torque. At this time, the output shaft of the pneumatic motor 13 is connected to the clutch main shaft 123 and drives the clutch main shaft 123 to start rotating. When the speed of the clutch main shaft 123 exceeds the threshold of the clutch 123, the clutch main shaft 123 will mesh with the inner rotor 124 and drive the inner rotor 124 to rotate synchronously. Finally, the meshing part 121 is disassembled or installed with the cutter bar under the rotation of the clutch main shaft 123.

[0035] Thus, by engaging with the inner rotor 124, the clutch main shaft 123 helps to increase the contact area and friction of the clutch main shaft 123, thereby helping to improve the stability of the overrunning clutch 12.

[0036] The inner rotor 124 may include a left meshing area and a right meshing area, such as Figure 4 As shown. When the pneumatic motor 13 rotates forward and drives the overrunning clutch 12 to rotate, the clutch main shaft 123 can engage in the right engagement zone. At this time, the engagement part rotates forward synchronously to realize the installation with the cutter rod. When the pneumatic motor 13 rotates in reverse and drives the overrunning clutch 12 to rotate, the clutch main shaft 123 can engage in the left engagement zone. At this time, the engagement part rotates in reverse synchronously to realize the disassembly with the cutter rod.

[0037] In some embodiments, the overrunning clutch 12 may also include a locating pin 125, which is mounted on the connecting housing 122 and spaced apart from the inner rotor 124. In this way, the locating pin 125 can restrict the rotation of the inner rotor 124 within a certain range, which helps to improve the rotational stability of the inner rotor 124 and helps to reduce the risk of the overrunning clutch 12 becoming unstable due to excessive deviation of the inner rotor 124.

[0038] The number of locating pins 125 can be multiple, such as two, three, four or other numbers. Multiple locating pins 125 can jointly limit the rotation of the inner rotor 124, which helps to better ensure the stability of the rotation of the overrunning clutch 12.

[0039] In other embodiments, the number of locating pins 125 can also be other, and can be set according to the actual situation.

[0040] Please refer to the following: Figure 1 and see Figure 5 In some embodiments, the mounting base 11 may include a support base 111 and a movable base 112. The pneumatic motor 13 and the overrunning clutch 12 are both mounted on the movable base 112. The pneumatic tool changer assembly 10 includes a cylinder 14, which is mounted on the movable base 112 and the support base 111. The cylinder 14 is adapted to drive the movable base 112 to move toward the support base 111.

[0041] In this way, the cylinder 14 can drive the overrunning clutch 12 to move toward the support seat 111, so that the position of the overrunning clutch 12 can be adjusted according to the position of the cutter rod to ensure engagement with the cutter rod. This helps to improve the adjustability of the pneumatic tool changer assembly 10 and improve the accuracy of engagement between the overrunning clutch 12 and the cutter rod.

[0042] In some embodiments, the piston shaft 141 of the cylinder 14 can be mounted on the movable seat 112 and the support seat 111. The movement of the cylinder body 142 of the cylinder 14 relative to the piston shaft 141 is adapted to drive the movable seat 112 to move towards the support seat 111. In this way, the cylinder body 142 can drive the movable seat 112, the pneumatic motor 13 and the overrunning clutch 12 to move synchronously towards the support seat 111, thereby helping to ensure the normal operation of the pneumatic tool changer assembly 10.

[0043] For example, the piston shaft 141 can be fixedly installed on the movable seat 112 and the support seat 111, and the cylinder body 142 is located on the side of the movable seat 112 away from the support seat 111. Then the movement of the piston shaft 141 driven by the gas in the cylinder 14 can be transformed into the movement of the cylinder body 142 driven by the gas, so that the cylinder body 142 can move relative to the piston shaft 141. This helps to ensure the normal operation of the pneumatic tool changer assembly 10.

[0044] Furthermore, the piston shaft 141 can be fixedly mounted on the movable seat 112 and the support seat 111, which also allows the movement of the cylinder body 142 relative to the piston shaft 141 to drive the movable seat 112 to move in a predetermined direction, thus helping to improve the stability of the movement of the movable seat 112.

[0045] In some embodiments, the mounting base 11 may further include a guide post 113, which is connected to the movable base 112 and the support base 111. The guide post 113 and the piston shaft 141 are distributed along the length of the mounting base 11. When the movable base 112 moves toward the support base 111, the guide post 113 passes through the movable base 112.

[0046] Thus, the guide post 113 helps ensure that the moving seat 112 moves in a predetermined direction, helps reduce the shaking of the moving seat 112 during movement, and helps improve the stability of the moving seat 112, thereby helping to improve the stability of the pneumatic tool changer assembly 10.

[0047] In some embodiments, the mounting base 11 may further include a first reset member 114 and a second reset member 115. The first reset member 114 is sleeved on the outer periphery of the piston shaft 141 and connected to the movable base 112 and the support base 111. The second reset member 115 is sleeved on the outer periphery of the guide post 113 and connected to the movable base 112 and the support base 111. Then the first reset member 114 and the second reset member 115 can reset the movable base 112 so that the movable base 112 can be located in a suitable position.

[0048] For example, when the overrunning clutch 12 completes the disassembly or installation with the pull rod, the force exerted on the cylinder body 142 in the cylinder 14 will gradually disappear, and the cylinder body 142 will stop moving towards the support seat 111. The first reset member 114 and the second reset member 115 can move the moving seat 112, the pneumatic motor 13 and the overrunning clutch 12 away from the support seat 111, thereby resetting the moving seat 112, the pneumatic motor 13 and the overrunning clutch 12 to the appropriate position.

[0049] The first reset member 114 and the second reset member 115 can be springs, so that the first reset member 114 and the second reset member 115 can absorb the vibration and impact energy of the moving seat 112, which helps to improve the stability of the moving seat 112.

[0050] In some embodiments, the mounting base 11 may further include a movable limiting member 116 and a mating member 117, the movable limiting member 116 and the mating member 117 being distributed along the height direction, the movable limiting member 116 being located on the surface of the movable base 112 facing the support base 111, and the mating member 117 being located on the surface of the support base 111 facing the movable base 112, the movable limiting member 116 and the mating member 117 being mutually limiting and mating.

[0051] Thus, the limiting engagement of the movable limit member 116 and the mating member 117 can restrict the travel of the movable seat 112, thereby helping to ensure that the movable seat 112 and the overrunning clutch 12 are in the right position and helping to improve the accuracy of the overrunning clutch 12 engaging with the cutter bar.

[0052] For example, the movable limiting member 116 can be a screw, and the movable limiting member 116 and the overrunning clutch 12 are located on the same side of the movable seat 112. The mating member 117 can be a top sleeve, and the mating member 117 faces the movable limiting member 116. The movable seat 112 can have a limiting position, which is the position where the overrunning clutch 12 engages with the cutter rod. Thus, when the cylinder 142 drives the movable seat 112 to move towards the support seat 111 to the limiting position, the movable limiting member 116 abuts against the mating member 117. At this time, the mating member 117 can restrict the movement of the movable limiting member 116, thereby restricting the movable seat 112 from continuing to move towards the support seat 111. This allows the movable seat 112 to drive the overrunning clutch 12 to the limiting position and engage with the cutter rod, thereby helping to ensure that the overrunning clutch 12 is in the appropriate position and improving the accuracy of the engagement between the overrunning clutch 12 and the cutter rod.

[0053] Thus, the limiting engagement of the movable limiting member 116 and the mating member 117 can ensure that the movable seat 112 and the overrunning clutch 12 are in the appropriate position. This helps to reduce the risk that the distance between the overrunning clutch 12 and the cutter rod will be too small due to the movable seat 112 moving too far towards the support seat 111, resulting in friction. It also helps to reduce the risk that the distance between the overrunning clutch 12 and the cutter rod will be too large due to the movable seat 112 moving too little towards the support seat 111, resulting in the overrunning clutch 12 being unable to disassemble or install the cutter rod.

[0054] Please refer to the previous document. Figure 1 In some embodiments, the pneumatic tool changer assembly 10 may further include a pneumatic triplet 15, a first switching valve 16 and a second switching valve 17 and a circulation pipe 18. The pneumatic triplet 15 is connected to the circulation pipe 18 and is located at the inlet end of the first switching valve 16. The first switching valve 16 is connected to the circulation pipe 18 and is located at the outlet end of the pneumatic triplet 15 and the inlet end of the pneumatic motor 13. The second switching valve 17 is connected to the circulation pipe 18 and is located at the inlet end of the cylinder 14.

[0055] For example, the first switching valve 16 can be a three-position five-way solenoid valve, which can transmit the torque output by the output shaft of the pneumatic motor 13 to the clutch spindle 123 required for tool changing via a key connection. The second switching valve 17 can be a logic valve, which can control the cylinder 14 to move towards the support 111.

[0056] Thus, the pneumatic motor 13 can be turned on and rotated in both directions by the first switching valve 16, and the cylinder 14 can be moved by controlling the second switching valve 17, which helps to ensure the normal operation of the pneumatic tool changer assembly 10.

[0057] In some embodiments, the pneumatic triplet 15 may include a water separator, a pressure reducing valve, and an oil mist lubricator. After air flows through the water separator, the filter separates dust, impurities, and moisture. The purified and dried air flows to the pressure reducing valve, which adjusts the higher pressure to the specified output pressure and ensures that the output pressure is stable and unaffected by changes in airflow. The pressure-regulated airflow flows to the oil mist lubricator, which sprays lubricating oil into a mist. The oil mist flows into the cylinder 14 and the pneumatic motor 13 with the airflow, which helps reduce frictional losses between the cylinder 14 and the pneumatic motor 13 and the air during operation, thereby helping to improve the service life of the cylinder 14 and the pneumatic motor 13.

[0058] In some implementations, such as Figure 6 As shown, after passing through the pneumatic triplet 15, the airflow can flow to the first switching valve 16. By manually operating the first switching valve 16, the airflow can be controlled to flow into the cylinder 14 and the pneumatic motor 13 respectively, thereby controlling the forward and reverse rotation of the pneumatic motor 13. When the pneumatic motor 13 rotates forward, it can drive the overrunning clutch 12 to load the tool, and when it rotates in reverse, it can drive the overrunning clutch 12 to release the tool. The peak torque of the pneumatic motor 13 can reach 12 N·m.

[0059] Thus, the first switching valve 16 controls the pneumatic motor 13 to rotate in both directions, and the second switching valve 17 controls the movement of the cylinder 14. When the cylinder body 142 drives the moving seat 112 to move towards the support seat 111 to the limit position, the meshing part 121 contacts the cutter rod. At this time, the speed of the pneumatic motor 13 can be controlled by the first switching valve 16 so that the speed of the pneumatic motor 13 can reach the threshold of the pneumatic motor 13 and connect with the clutch spindle 123. When the speed of the clutch spindle 123 exceeds the threshold of the clutch 12, the clutch spindle 123 meshes with the inner rotor 124. The meshing part 121 completes the meshing with the cutter rod under the rotation of the clutch spindle 123 to install or remove the tool.

[0060] After the installation or removal of the tool is completed, the cylinder 14 stops working, and the cylinder body 142 and the moving seat 112 move away from the support seat 111 in the direction of the reaction force of the first reset member 114 and the second reset member 115, so that the meshing part 121 disengages from the drawbar. At this time, the pneumatic motor 13 stops rotating, disengages from the overrunning clutch 12 and resets.

[0061] Please see Figure 2This invention provides a pneumatic tool changer 100, which can be applied to machine tools such as milling machines and drilling machines. The pneumatic tool changer 100 includes a base 20 and a pneumatic tool changing assembly 10 as provided in any of the above embodiments. The pneumatic tool changing assembly 10 is mounted on the base 20. For example, the pneumatic tool changing assembly 10 can be mounted on the base 20 via a support 111, which helps to improve the compactness of the pneumatic tool changer 100 structure.

[0062] In summary, the pneumatic tool changer 10 and pneumatic tool changer 100 provided in this embodiment of the invention include a mounting base 11, an overrunning clutch 12, and a pneumatic motor 13. The overrunning clutch 12 is mounted on the mounting base 11 and has an engagement portion 121. The pneumatic motor 13 is connected to the side of the overrunning clutch 12 away from the engagement portion 121. The pneumatic motor 13 and the overrunning clutch 12 are distributed along the height direction of the pneumatic tool changer 10. The rotation of the pneumatic motor 13 is adapted to drive the overrunning clutch 12 to rotate. Thus, by rotating the pneumatic motor 13, the overrunning clutch 12 can be driven to rotate, thereby allowing the engagement portion 121 to engage with the drawbar to achieve the disassembly or installation of the drawbar. Therefore, the tool changing method of the pneumatic tool changer 10 is simple, which helps to improve the tool changing efficiency of the pneumatic tool changer 10. Furthermore, since the pneumatic motor 13 only outputs torque to drive the overrunning clutch 12 to rotate when it reaches a certain speed, this helps to reduce the time that the pneumatic motor 13 carries the overrunning clutch 12, which helps to reduce the risk of damage to the pneumatic motor 13 due to carrying the overrunning clutch 12 for a long time, thereby helping to improve the service life of the pneumatic motor 13.

[0063] In this invention, unless otherwise explicitly specified or limited, the terms "installation," "connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a transmission connection; they can be a direct connection or an indirect connection via an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] Furthermore, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as referring to specific or particular structures. The description of "some embodiments" means that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this invention, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate different embodiments or examples described in this invention, as well as the features of different embodiments or examples.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A pneumatic tool changer assembly, characterized in that, include: Mounting base; An overrunning clutch, wherein the overrunning clutch is mounted on the mounting base, and the overrunning clutch is provided with an engagement portion; and A pneumatic motor is connected to the side of the overrunning clutch opposite to the engagement part. The pneumatic motor and the overrunning clutch are distributed along the height direction of the pneumatic tool changer assembly. The rotation of the pneumatic motor is adapted to drive the overrunning clutch to rotate. The overrunning clutch includes a connecting housing, a clutch main shaft, a locating pin, and an inner rotor. The connecting housing is mounted on the mounting base, the clutch main shaft is mounted on the connecting housing, the engagement part is located on the side of the clutch main shaft away from the pneumatic motor, the inner rotor is mounted on the connecting housing and surrounds the clutch main shaft, and the locating pin is mounted on the connecting housing and spaced apart from the inner rotor. When the pneumatic motor starts and its speed reaches the threshold of the pneumatic motor, the output shaft of the pneumatic motor is connected to the clutch main shaft and drives the clutch main shaft to start rotating. When the speed of the clutch main shaft reaches the threshold of the overrunning clutch, the clutch main shaft meshes with the inner rotor and drives the inner rotor to rotate synchronously. The inner rotor includes a left engagement zone and a right engagement zone. The pneumatic motor rotates forward and drives the clutch main shaft to engage in the right engagement zone, so that the engagement part rotates forward to install the cutter rod. The pneumatic motor rotates in reverse and drives the clutch main shaft to engage in the left engagement zone, so that the engagement part rotates in reverse to disassemble the cutter rod.

2. The pneumatic tool changer assembly according to claim 1, characterized in that, The mounting base includes a support base and a movable base. The pneumatic motor and the overrunning clutch are both mounted on the movable base. The pneumatic tool changer includes a cylinder, which is mounted on the movable base and the support base. The cylinder is adapted to drive the movable base to move towards the support base.

3. The pneumatic tool changer assembly according to claim 2, characterized in that, The piston shaft of the cylinder is mounted on the movable seat and the support seat, and the movement of the cylinder body relative to the piston shaft is adapted to drive the movable seat to move towards the support seat.

4. The pneumatic tool changer assembly according to claim 3, characterized in that, The mounting base also includes a guide post, which is connected to the movable base and the support base. The guide post and the piston shaft are distributed along the length direction of the mounting base. When the movable base moves toward the support base, the guide post passes through the movable base.

5. The pneumatic tool changer assembly according to claim 4, characterized in that, The mounting base further includes a first reset member and a second reset member. The first reset member is sleeved on the outer periphery of the piston shaft and connected to the movable seat and the support seat. The second reset member is sleeved on the outer periphery of the guide post and connected to the movable seat and the support seat.

6. The pneumatic tool changer assembly according to claim 5, characterized in that, The mounting base further includes a movable limiting member and a mating member, which are distributed along the height direction. The movable limiting member is located on the surface of the movable base facing the support base, and the mating member is located on the surface of the support base facing the movable base. The movable limiting member and the mating member are mutually limiting and mating.

7. The pneumatic tool changer assembly according to claim 2, characterized in that, The pneumatic tool changer assembly further includes a pneumatic triplet, a first switching valve, a second switching valve, and a circulation pipe. The pneumatic triplet is connected to the circulation pipe and located at the inlet end of the first switching valve. The first switching valve is connected to the circulation pipe and located at the outlet end of the pneumatic triplet and the inlet end of the pneumatic motor. The second switching valve is connected to the circulation pipe and located at the inlet end of the cylinder.

8. A pneumatic tool changer, characterized in that, The pneumatic tool changer includes: Base; and The pneumatic tool changer assembly according to any one of claims 1 to 7 is mounted on the machine base.

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