Rotary tool changer, numerical control machine tool and control method of numerical control machine tool

Abstract

The invention discloses a rotary tool changing device, a numerical control machine tool and a control method of the numerical control machine tool, and the rotary tool changing device comprises a first driving mechanism, a second driving mechanism and a third driving mechanism, the rotating mechanism comprises a movable female base arranged on the first linear guide rail in a sliding mode and a rotating air cylinder installed on the movable female base, a rotating shaft of the rotating air cylinder can rotate relative to a body of the rotating air cylinder, and the extending direction of the rotating shaft of the rotating air cylinder is perpendicular to the first direction; the tool changing assembly comprises a fixing base connected with a rotating shaft of the rotary air cylinder, a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are installed on the fixing base, the fixing base rotates along with rotation of the rotating shaft of the rotary air cylinder, and the first clamping piece and the second clamping piece are used for clamping a tool; the second linear guide rail is arranged in the second direction, and the supporting base is arranged on the second linear guide rail in a sliding mode. According to the design, the cost of the rotary tool changing device can be reduced.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, and in particular to a rotary tool changer, a CNC machine tool, and a control method for the CNC machine tool. Background Technology

[0002] The diversification of products has placed higher demands on machining equipment. On the same machine, the same product needs to be processed by turning, drilling, milling, grinding and other processes. In the past, the change of tools was done manually, which not only wasted a lot of time, but also increased labor costs. In order to reduce manual tool changing, improve automation and production efficiency, and ensure the consistency of processing, a tool magazine with automatic tool changing function and the ability to store a large number of tools is favored by manufacturing and processing enterprises. Among them, the simple rotary tool changing structure is particularly important.

[0003] Existing tool changer structures generally use motor drives, which are expensive. Summary of the Invention

[0004] This application provides a rotary tool changer, a CNC machine tool, and a control method for the CNC machine tool, which can save the cost of the rotary tool changer.

[0005] This application provides a rotary tool changer, comprising: a first driving mechanism including a support base and a first linear guide rail disposed on the support base and extending along a first direction, the first direction being the height direction; a rotating mechanism including a movable female seat slidably disposed on the first linear guide rail and a rotary cylinder mounted on the movable female seat, the rotating shaft of the rotary cylinder being rotatable relative to the body of the rotary cylinder, the extending direction of the rotating shaft of the rotary cylinder being perpendicular to the first direction; a tool changing assembly including a fixed base connected to the rotating shaft of the rotary cylinder and a first clamping member and a second clamping member mounted on the fixed base, the fixed base rotating as the rotating shaft of the rotary cylinder rotates, the first clamping member and the second clamping member being used to clamp a tool; and a second driving mechanism including a second linear guide rail disposed along a second direction, the support base being slidably disposed on the second linear guide rail, the second direction intersecting the first direction.

[0006] In one embodiment, the second drive mechanism further includes a base plate and a linear cylinder. The linear cylinder is fixed to one side of the base plate, and the second linear guide rail is disposed on the base plate. The linear cylinder includes a movable end, which is fixedly connected to the support base and can move in the second direction.

[0007] In one embodiment, the second drive mechanism further includes a first detection sensor and a second detection sensor spaced apart on the base plate along the second direction. When the support slides along the second linear guide to a first target position adjacent to the tool magazine, the first detection sensor generates a first trigger signal. When the support slides along the second linear guide to a second target position adjacent to the spindle, the second detection sensor generates a second trigger signal.

[0008] In one embodiment, the first detection sensor includes a first contact switch, and the support base is provided with a first switch connector that matches the first contact switch. When the support base slides to the first target position, the first contact switch contacts the first switch connector to generate the first trigger signal. The second detection sensor includes a second contact switch, and the support base is provided with a second switch connector that matches the second contact switch. When the support base slides to the second target position, the second contact switch contacts the second switch connector to generate the second trigger signal.

[0009] In one embodiment, the first drive mechanism further includes a motor and a lead screw. The lead screw is arranged parallel to the first linear guide and connected to the output shaft of the motor, so that the lead screw rotates under the drive of the motor, and the movable female seat is rotatably sleeved on the lead screw.

[0010] In one embodiment, the connection points between the first clamping member and the fixed base, and the connection points between the second clamping member and the fixed base, are located on opposite sides of the rotation axis.

[0011] A second aspect of this application provides a CNC machine tool, the CNC machine tool including a rotary tool changer as described in any of the above embodiments, the CNC machine tool further including: a tool magazine and a spindle, distributed on both sides of the rotary tool changer; and a controller, the controller being communicatively connected to the tool magazine, the spindle and the rotary tool changer.

[0012] A third aspect of this application provides a control method for a CNC machine tool, the method being applied in a CNC machine tool including the one described in the above embodiments. The method includes: in response to the spindle needing to replace a first tool in the tool magazine, controlling a second drive mechanism to drive a support seat to move along a second linear guide to a first target position close to the tool magazine; controlling the first drive mechanism to drive a movable support seat to move along the first linear guide until the movable support seat reaches a third target position, wherein the third target position is the height at which a first clamping member clamps a tool located in the tool magazine; controlling the first clamping member to clamp the first tool in the tool magazine; controlling the first drive mechanism to drive the movable support seat away from the tool magazine along the first linear guide until the movable support seat reaches a fourth target position, wherein the fourth target position... The target position is the height at which the first clamping member completely removes the tool from the tool magazine; the second drive mechanism is controlled to drive the support base to move along the second linear guide rail to a second target position close to the spindle; the first drive mechanism is controlled to drive the moving female seat to move along the first linear guide rail to a fifth target position, wherein the fifth target position is used to rotate the first clamping member and the second clamping member; the rotating shaft of the rotary cylinder is controlled to rotate so that the first clamping member turns towards the spindle; the first drive mechanism is controlled to drive the moving female seat to move along the first linear guide rail to a sixth target position close to the spindle, wherein the sixth target position is the height at which the second clamping member clamps the tool located on the spindle; the spindle is controlled to clamp the first tool, and the first clamping member is controlled to release the first tool.

[0013] In one embodiment, the fourth target position is the same as the sixth target position. After the step of controlling the second drive mechanism to drive the support base to move along the second linear guide to a second target position close to the spindle, the method further includes: controlling the second clamping member to clamp the second tool on the spindle, and controlling the spindle to release the second tool; after the step of controlling the spindle to clamp the first tool and controlling the first clamping member to release the first tool, the method further includes: controlling the second drive mechanism to drive the support base to move along the second linear guide to a first target position close to the tool magazine; controlling the first drive mechanism to drive the moving mother seat to move along the first linear guide until the moving mother seat reaches a third target position; and controlling the second clamping member to release the second tool from the tool magazine.

[0014] In one embodiment, after the step of controlling the second clamping member to release the second tool from the tool magazine, the method further includes: controlling the second drive mechanism to drive the support base to move along the second linear guide to a second target position close to the spindle; controlling the first drive mechanism to drive the moving female seat to move along the first linear guide to a fifth target position; and controlling the rotary cylinder to reset so that the second clamping member turns towards the spindle.

[0015] The advantages of this application are as follows: The rotating mechanism 200 of this application adopts a cylinder-driven design, which can reduce costs compared with the use of a motor. At the same time, the rotating mechanism uses a rotary cylinder, which enables the first clamping member and the second clamping member to change tools between the tool magazine and the spindle by flipping, which can effectively protect the tools and extend the service life of the tools. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of a first embodiment of a partial structure of a CNC machine tool according to this application; Figure 2 yes Figure 1 A schematic diagram of the left side of one embodiment of a local region M; Figure 3 This is a flowchart illustrating the control method for the CNC machine tool according to this application; Figure 4 This is a schematic diagram of a second embodiment of a partial structure of a CNC machine tool according to this application; Figure 5 This is a schematic diagram of a third embodiment of a partial structure of a CNC machine tool according to this application; Figure 6 This is a schematic diagram of the fourth embodiment of the partial structure of the CNC machine tool of this application; Figure 7 This is a schematic diagram of the fifth embodiment of a partial structure of a CNC machine tool according to this application; Figure 8 yes Figure 3 A flowchart illustrating an embodiment following step S900; Figure 9 This is a schematic diagram of the sixth embodiment of a partial structure of a CNC machine tool according to this application; Figure 10 yes Figure 8 A flowchart illustrating an embodiment following step S903; Figure 11 This is a schematic diagram of the seventh embodiment of the partial structure of the CNC machine tool of this application.

[0017] Explanation of reference numerals: 10 - Rotary tool changer; 100-First drive mechanism; 110-Support base; 120-First linear guide rail; 130-Motor; 140-Lead screw; 150-Connecting plate; 160-Coupling; 170-Slider; 111-First switch connector; 200 - Rotary mechanism; 210 - Moving base; 220 - Rotary cylinder; 300-Tool changer assembly; 310-Fixed base; 320-First clamping component; 330-Second clamping component; 400 - Second drive mechanism; 410 - Second linear guide rail; 420 - Base plate; 430 - Linear cylinder; 441 - First contact switch; 442 - Second contact switch. Detailed Implementation

[0018] The technical solutions of the embodiments of this application 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 this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0019] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a first embodiment of a partial structure of a CNC machine tool according to this application. Figure 2 yes Figure 1The left-side schematic diagram of a partial region M in this application shows that, in a first aspect, a rotary tool changer 10 is provided. The rotary tool changer 10 includes a first drive mechanism 100, a rotary mechanism 200, a tool changer assembly 300, and a second drive mechanism 400. The first drive mechanism 100 includes a support base 110 and a first linear guide rail 120 disposed on the support base 110 and extending along a first direction X, where the first direction X is the height direction. The rotary mechanism 200 includes a movable female seat 210 slidably disposed on the first linear guide rail 120 and a rotary cylinder 220 mounted on the movable female seat 210. The rotation shaft 222 of the rotary cylinder 220 is rotatable relative to the rotary cylinder 220. The body 221 of the rotary cylinder 220 rotates, and the extension direction of the rotation shaft 222 of the rotary cylinder 220 is perpendicular to the first direction X. The tool changing assembly 300 includes a fixed base 310 connected to the rotation shaft 222 of the rotary cylinder 220, and a first clamping member 320 and a second clamping member 330 mounted on the fixed base 310. The fixed base 310 rotates as the rotation shaft 222 of the rotary cylinder 220 rotates. The first clamping member 320 and the second clamping member 330 are used to clamp the tool. The second drive mechanism 400 includes a second linear guide rail 410 arranged along the second direction Y. The support base 110 is slidably arranged on the second linear guide rail 410. The second direction Y intersects with the first direction X.

[0020] Specifically, the support base 110 supports the first linear guide rail 120, which is located above the support base 110 and positioned along the first direction X, i.e., longitudinally. The movable female base 210 is slidably positioned with respect to the first linear guide rail 120, allowing the movable female base 210 to slide along the first linear guide rail 120 in the first direction X. That is, the movable female base 210 can move closer to or further away from the support base 110 in the first direction X. A rotary cylinder 220 is installed on one side of the movable female base 210. The rotary cylinder 220 is a rotary cylinder that can adjust and limit the rotation angle. For example, the default starting position angle is 0 degrees, and the adjusted ending position angle can be 60 degrees, 90 degrees, 180 degrees, or 360 degrees, etc. The ending position angle can be customized. The body 221 of the rotary cylinder 220 remains stationary, while the rotation shaft 222 of the rotary cylinder 220 can rotate relative to the body 221 of the rotary cylinder 220. The fixed base 310 is fixed on the rotating shaft 222 of the rotary cylinder 220. Since the extension direction Z of the rotating shaft 222 of the rotary cylinder 220 is perpendicular to the first direction X, the fixed base 310 will be rotated when the rotating shaft 222 of the rotary cylinder 220 rotates. The first clamping member 320 and the second clamping member 330 are mounted on the fixed base 310, and they will also be rotated when the rotating shaft 222 of the rotary cylinder 220 rotates. The tool magazine 20 and the spindle 30 are located on both sides of the rotary cylinder 220 of the rotary tool changer 10 in the second direction Y. Therefore, the first clamping member 320 can be driven by the rotary cylinder 220. 0. The second clamping member 330 flips towards the tool magazine 20 and the spindle 30 on both sides respectively. Specifically, for example, after the first clamping member 320 takes out the tool from the tool magazine 20, it is rotated by the rotary cylinder 220 and flipped from the side relatively closer to the tool magazine 20 to the side relatively closer to the spindle 30, so that the tool held by the first clamping member 320 can be installed on the spindle 30. For another example, after the second clamping member 330 takes the tool off the spindle 30, it is rotated by the rotary cylinder 220 and flipped from the side relatively closer to the spindle 30 to the side relatively closer to the tool magazine 20, so that the tool held by the second clamping member 330 can be put back into the tool magazine 20. The support base 110 is slidably mounted on the second linear guide rail 410. The support base 110 can drive the mechanism above the support base 110 to move in the second direction Y, so that the first clamping member 320 and the second clamping member 330 can move closer to the tool magazine 20 and away from the spindle 30 in the second direction Y, or move away from the tool magazine 20 and closer to the spindle 30.

[0021] Unlike existing technologies, the first drive mechanism 100 of this application allows the first clamping member 320 and the second clamping member 330 to move in the height direction without the spindle 30 needing to move in the height direction to approach the tool magazine 20. The second drive mechanism 400 allows the first clamping member 320 and the second clamping member 330 to move in the second direction Y without the spindle 30 needing to move in the second direction Y to approach the tool magazine 20. Furthermore, the fact that the spindle 30 does not need to move back and forth helps to save the spindle 30's movement time, and the time saved can be used for the spindle 30 to process the workpiece. The rotating mechanism 200 can drive the first clamping member 320 and the second clamping member 330 to rotate. On the one hand, the tool tip on the spindle 30 is facing downwards. The clamping member rotates from one side of the spindle 30 to the other side of the tool magazine 20, with the tool tip facing upwards. This means that the tool tip is finally placed in the tool magazine 20 with the tool tip facing upwards. The upward-facing tool tip can avoid damage to the tool tip due to collision or force compression. The rotating design can effectively protect the tool and improve its service life. On the other hand, this application uses a rotary cylinder 220 as the driving component in the rotation direction of the first clamping member 320 and the second clamping member 330. Unlike the existing technology that uses a motor, the rotary cylinder 220 is less expensive than a motor. Moreover, the rotary cylinder 220 can adjust the rotation angle so that one of the starting position angle and the ending position angle corresponds to the position of the tool magazine 20 and the other corresponds to the position of the spindle 30. Compared with a motor, the rotary cylinder 220 can greatly improve mechanical wear and extend the service life of the rotary tool changer 10. Furthermore, two clamping components are provided, which can clamp two tools at the same time. One is used to clamp the tool to be installed, and the other is used to clamp the tool to be replaced, which can greatly improve the tool changing efficiency of the rotary tool changer 10.

[0022] In one embodiment, the first clamping member 320 and the second clamping member 330 include grippers.

[0023] In one embodiment, see Figure 1 The second drive mechanism 400 also includes a base plate 420 and a linear cylinder 430. The linear cylinder 430 is fixed on one side of the base plate 420. The second linear guide rail 410 is disposed on the base plate 420. The linear cylinder 430 includes a movable end, which is fixedly connected to the support base 110. The movable end can move in the second direction Y.

[0024] Specifically, the base plate 420, like the second linear guide rail 410, extends along the second direction Y. The second linear guide rail 410 is mounted on the base plate 420. Preferably, the length of the base plate 420 in the second direction Y is greater than the length of the second linear guide rail 410 in the second direction Y. The linear cylinder 430 is fixed to one side of the base plate 420. When installing the rotary tool changer 10, the linear cylinder 430 can be installed on the side of the second linear guide rail 410 away from the tool magazine 20, roughly below the spindle 30, to facilitate the support base 110 approaching the tool magazine 20. The movable end of the linear cylinder 430 faces the side of the second linear guide rail 410, that is, the side facing the tool magazine 20, and is fixedly connected to the support base 110, so that the linear cylinder 430 can drive the support base 110 to move along the second direction Y on the second linear guide rail 410. This embodiment, by designing the driving component in the second direction Y as a linear cylinder 430 instead of a motor, further reduces the overall cost, while reducing mechanical wear and extending service life.

[0025] Further reading Figure 1 The linear cylinder 430 is provided with a first air inlet a and a second air inlet b. The first air inlet a and the second air inlet b are respectively connected to an external air source through pipelines. A control solenoid valve is provided in the pipeline to control the gas entry. When only the first air inlet a is filled with air, the movable end of the linear cylinder 430 moves closer to the tool magazine 20 along the second direction Y. When only the second air inlet b is filled with air, the movable end of the linear cylinder 430 moves closer to the spindle 30 along the second direction Y.

[0026] Furthermore, the rotary cylinder 220 is equipped with a third air inlet (not shown) and a fourth air inlet (not shown). The third and fourth air inlets are connected to an external air source via pipelines, and control solenoid valves are installed in the pipelines to control the gas intake. When only the third air inlet is filled with air, the rotating shaft of the rotary cylinder 220 drives the first clamping member 320 to rotate toward the main shaft 30; when only the fourth air inlet is filled with air, the rotating shaft of the rotary cylinder 220 drives the second clamping member 330 to rotate toward the main shaft 30, i.e., rotational reset is performed.

[0027] In one embodiment, see Figure 1 The second drive mechanism 400 also includes a first detection sensor and a second detection sensor that are spaced apart along the second direction Y on the base plate 420. When the support 110 slides along the second linear guide 410 to the first target position A adjacent to the tool magazine 20, the first detection sensor generates a first trigger signal. When the support 110 slides along the second linear guide 410 to the second target position B adjacent to the spindle 30, the second detection sensor generates a second trigger signal.

[0028] Specifically, the first target position A is when the support base 110 reaches the position where the tool magazine 20 can pick up and put down tools, and the second target position B is when the support base 110 reaches the position where the spindle 30 can load and unload tools. In order to ensure the smooth progress of subsequent actions, a first detection sensor and a second detection sensor are installed. When the first detection sensor detects that the support base 110 has reached the first target position A and the second detection sensor detects that the support base 110 has reached the second target position B, the rotating mechanism 200 can be controlled to lift and rotate to complete the subsequent tool picking and putting tasks.

[0029] In one embodiment, see Figure 1 The first detection sensor includes a first contact switch 441, and a first switch connector 111 matching the first contact switch 441 is provided on the support base 110. When the support base 110 slides to the first target position A, the first contact switch 441 contacts the first switch connector 111 and generates a first trigger signal. The second detection sensor includes a second contact switch 442, and a second switch connector (not shown) matching the second contact switch 442 is provided on the support base 110. When the support base 110 slides to the second target position B, the second contact switch 442 contacts the second switch connector and generates a second trigger signal.

[0030] Specifically, when the first switch 441 is separated from the first switch connector 111, the first contact switch 441 is in an open state; when the first switch connector 111 is in contact with it, the first contact switch 441 is in a closed state. When the first contact switch 441 is closed, it can be determined that the support base 110 has slid to the first target position A, thus determining that the support base 110 has reached the tool magazine 20 position. Similarly, when the second contact switch 442 is separated from the second switch connector, the second contact switch 442 is in an open state; when the second contact switch 442 is in contact with it, the second contact switch 442 is in a closed state. When the second contact switch 442 is closed, it can be determined that the support base 110 has slid to the second target position B, thus determining that the support base 110 has reached the spindle 30 position.

[0031] Of course, in some other implementations, the first and second detection sensors may also be non-contact sensors, which are more expensive than contact sensors.

[0032] In one embodiment, combined with Figure 1 and Figure 2The first drive mechanism 100 also includes a motor 130 and a lead screw 140. The lead screw 140 is arranged parallel to the first linear guide rail 120 and connected to the output shaft of the motor 130 so that the lead screw 140 rotates under the drive of the motor 130. The movable female seat 210 is rotatably sleeved on the lead screw 140.

[0033] Specifically, considering that the moving base 210 needs to be set at more than two points in the first direction X, it cannot be driven by a traditional cylinder. Using a motor can achieve position control at more points. Furthermore, if all cylinders are used, the overall flexibility of the rotary tool changer will be reduced. While reducing costs, this would also significantly reduce the applicability of the rotary tool changer. In this embodiment, a linear cylinder 430 is set in the second drive mechanism 400, a rotary cylinder 220 is set in the rotary mechanism 200, and a motor 130 is set in the first drive mechanism 100. This can significantly reduce costs while ensuring the flexibility and applicability of the rotary tool changer 10 in different scenarios.

[0034] Further reading Figure 1 The first drive mechanism 100 also includes a connecting plate 150, a coupling 160, and a slider 170. The connecting plate 150 is used to connect the support base 110 and the first linear guide rail 120. The coupling 160 is used to connect the output shaft of the motor 130 and one end of the lead screw 140. The slider 170 is disposed between the support base 110 and the second linear guide rail 410 to facilitate the sliding of the support base 110 on the second linear guide rail 410.

[0035] In one embodiment, see Figure 1 and Figure 2 The connection points of the first clamping member 320 and the fixed base 310, and the connection points of the second clamping member 330 and the fixed base 310 are located on opposite sides of the rotating shaft.

[0036] Specifically, the first clamping member 320 and the second clamping member 330 are arranged opposite to each other on the fixed base 310. On the one hand, this can prevent the first clamping member 320 and the second clamping member 330 from colliding with each other after the tool is removed due to differences in tool shape and length. On the other hand, since the tool magazine 20 and the spindle 30 are also located on both sides of the rotary cylinder 220, one of the first clamping member 320 and the second clamping member 330 is located close to the tool magazine 20, and the other is located close to the spindle 30. The closer the distance, the faster the picking and placing speed. Furthermore, the opposite arrangement means that by rotating 180 degrees, the first clamping member 320 can reach the position where the second clamping member 330 was previously located, and the second clamping member 330 can reach the position where the first clamping member 320 was previously located. The first clamping member 320 and the second clamping member 330 can achieve position switching by rotating 180 degrees.

[0037] See Figure 1 The second aspect of this application provides a CNC machine tool, which includes a rotary tool changer 10 as described in any of the above embodiments. The CNC machine tool also includes a tool magazine 20, a spindle 30, and a controller (not shown). The tool magazine 20 and the spindle 30 are distributed on both sides of the rotary tool changer 10. The controller is communicatively connected to the tool magazine 20, the spindle 30, and the rotary tool changer 10. The controller is used to send relevant control commands to the tool magazine 20, the spindle 30, and the rotary tool changer 10. For example, a rotation command can be sent to the tool magazine 20 to rotate the tool to a position where the rotary tool changer 10 needs to pick up the tool, or to rotate an empty space to a position where the rotary tool changer 10 needs to place the tool. For example, a movement command can be sent to the spindle 30 for tool changing or machining. As another example, a tool pick-up or tool change command can be sent to the rotary tool changer 10 for picking up or changing tools between the tool magazine 20 and the spindle 30.

[0038] See Figure 3 , Figure 3 This is a flowchart illustrating the control method for a CNC machine tool according to this application. A third aspect of this application provides a control method for a CNC machine tool, which is applied in the CNC machine tool described in the above embodiments. The method includes: S100: In response to the spindle 30 needing to replace the first tool in the tool magazine 20, control the second drive mechanism 400 to drive the support 110 to move along the second linear guide 410 to the first target position A close to the tool magazine 20.

[0039] Specifically, in combination Figure 1 Since the first tool is in the tool magazine 20, to remove the first tool from the tool magazine 20, it is necessary to control the support base 110 to move closer to the tool magazine 20, i.e., the first target position A. Of course, if the support base 110 is already at the first target position A, this step can be skipped and the next step can be executed directly.

[0040] Optionally, by supplying air to the first air inlet a of the linear cylinder 430, the movable end of the linear cylinder 430 pushes the support 110 toward the tool magazine 20 until the first switch connector 111 on the support 110 contacts the first contact switch 441, triggering the first trigger signal, thus determining that the support 110 has reached the first target position A.

[0041] S200: Control the first drive mechanism 100 to drive the moving mother seat 210 to move along the first linear guide rail 120 until the moving mother seat 210 reaches the third target position C, wherein the third target position C is the height at which the first clamping member 320 clamps the tool located in the tool magazine 20.

[0042] Specifically, in combination Figure 1If the movable female base 210 is not exactly at the third target position C, the first drive mechanism 100 needs to be controlled to drive the movable female base 210 to descend, so that the first clamping member 320 just reaches the third target position C where it can clamp the first tool. Of course, if the movable female base 210 is already at the third target position C, this step can be skipped and the next step can be executed directly.

[0043] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the third target position C near the tool magazine 20.

[0044] S300: Controls the first clamping member 320 to clamp the first tool in the tool magazine 20.

[0045] Specifically, in combination Figure 1 The first tool is temporarily fixed on the first clamping member 320 by clamping the first clamping member 320.

[0046] S400: Control the first drive mechanism 100 to drive the moving mother seat 210 away from the tool magazine 20 along the first linear guide rail 120 until the moving mother seat 210 reaches the fourth target position D, where the fourth target position D is the height at which the first clamping member 320 completely removes the tool from the tool magazine 20.

[0047] Specifically, in combination Figure 1 The rotary tool changer 10 needs to raise the height of the first tool in order to successfully remove the first tool from the tool magazine 20. By controlling the first drive mechanism 100 to drive the moving base 210 to rise, the first clamping member 320 reaches the fourth target position D where the first tool is completely removed from the tool magazine 20.

[0048] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the fourth target position D, which is away from the tool magazine 20.

[0049] S500: Control the second drive mechanism 400 to drive the support 110 to move along the second linear guide 410 to the second target position B near the main shaft 30.

[0050] Specifically, see Figure 4 , Figure 4 This is a schematic diagram of the second embodiment of the partial structure of the CNC machine tool of this application. After the first tool is removed, it is necessary to mount the first tool on the spindle 30. It is necessary to control the position of the support seat 110 close to the spindle 30, that is, the second target position B.

[0051] Optionally, by supplying air to the second air inlet of the linear cylinder 430, the movable end of the linear cylinder 430 pulls the support 110 toward the main shaft 30 until the second switch connector on the support 110 contacts the second contact switch, triggering the second trigger signal, thus determining that the support 110 has reached the second target position B.

[0052] In one embodiment, the fourth target position D is the same as the sixth target position F, where the sixth target position F is the height at which the second clamping member 330 clamps the tool located on the spindle 30. After the above step S500, the method further includes: Control the second clamping member 330 to clamp the second tool on the spindle 30, and control the spindle 30 to release the second tool.

[0053] Specifically, in combination Figure 4 The second tool is temporarily fixed on the second clamping member 330 by clamping the second clamping member 330.

[0054] Of course, in some other implementations, if there is no tool on the spindle 30, step S600 can be executed directly.

[0055] S600: Control the first drive mechanism 100 to drive the moving mother seat 210 to move along the first linear guide rail 120 to the fifth target position E, wherein the fifth target position E is used to rotate the first clamping member 320 and the second clamping member 330.

[0056] Specifically, see Figure 5 , Figure 5 This is a schematic diagram of a third embodiment of the partial structure of the CNC machine tool in this application. The rotary tool changer 10 needs to remove the second tool from the spindle 30 smoothly and also needs to lower the height of the second tool. By controlling the first drive mechanism 100 to drive the moving mother seat 210 to descend, the second clamping member 330 reaches the fifth target position E where the second tool is completely removed from the spindle 30.

[0057] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the fifth target position E, which is away from the main shaft 30.

[0058] S700: Controls the rotation of the rotating shaft of the rotary cylinder 220 to rotate the first clamping member 320 to the main shaft 30.

[0059] Specifically, see Figure 6 , Figure 6 This is a schematic diagram of the fourth embodiment of the partial structure of the CNC machine tool of this application. It is necessary to rotate the first clamping member 320 holding the first tool to the side of the spindle 30 and rotate the second clamping member 330 holding the second tool to the side of the tool magazine 20, so as to facilitate the subsequent replacement of the first tool onto the spindle 30.

[0060] Optionally, air is supplied to the third air inlet of the rotary cylinder 220, causing the rotating shaft of the rotary cylinder 220 to rotate 180 degrees, the first clamping member 320 to rotate to the original position of the second clamping member 330, and the second clamping member 330 to rotate to the original position of the first clamping member 320.

[0061] S800: Control the first drive mechanism 100 to drive the moving mother seat 210 to move along the first linear guide rail 120 to the sixth target position F close to the main shaft 30.

[0062] Specifically, see Figure 7 , Figure 7 This is a schematic diagram of the fifth embodiment of the partial structure of the CNC machine tool of this application. The rotary tool changer 10 needs to install the second tool and needs to move the second tool to the sixth target position F. By controlling the first drive mechanism 100 to drive the moving mother seat 210 to rise, the first tool held by the first clamping member 320 is completely installed on the spindle 30.

[0063] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the sixth target position F close to the main shaft 30.

[0064] S900: Control the spindle 30 to clamp the first tool, and control the first clamping member 320 to release the first tool.

[0065] Specifically, after the first tool is in position, the spindle 30 clamps the first tool, completing the installation of the first tool. The first clamping member 320 releases the first tool, completing the tool change. This application improves the efficiency of tool changing by first retrieving the tool from the tool magazine 20 and then changing the tool at the spindle 30.

[0066] In one embodiment, see Figure 8 and Figure 9 , Figure 8 yes Figure 3 A flowchart illustrating an embodiment following step S900. Figure 9 This is a schematic diagram of the sixth embodiment of the partial structure of the CNC machine tool of this application. After step S900, it further includes: S901: Control the second drive mechanism 400 to drive the support 110 to move along the second linear guide rail 410 to the first target position A close to the tool magazine 20.

[0067] Specifically, the removed second tool needs to be placed into the tool magazine 20, and the support base 110 needs to be positioned close to the tool magazine 20, i.e., the first target position A.

[0068] Optionally, by supplying air to the first air inlet of the linear cylinder 430, the movable end of the linear cylinder 430 pushes the support 110 toward the tool magazine 20 until the first switch connector 111 on the support 110 contacts the first contact switch 441, triggering the first trigger signal, thus determining that the support 110 has reached the first target position A.

[0069] S902: Control the first drive mechanism 100 to drive the moving mother seat 210 to move along the first linear guide rail 120 until the moving mother seat 210 reaches the third target position C.

[0070] Specifically, it is necessary to further reduce the height of the second clamping member 330, and to control the first drive mechanism 100 to drive the moving female seat 210 to descend, so that the second clamping member 330 just reaches the third target position C where the second tool can be released.

[0071] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the third target position C near the tool magazine 20.

[0072] S903: Control the second clamping member 330 to release the second tool into the tool magazine 20.

[0073] Specifically, upon reaching the third target position C, the second tool is placed in the tool magazine 20, at which point the second clamping member 330 can release the second tool.

[0074] Further reading Figure 10 and Figure 11 , Figure 10 yes Figure 8 A flowchart illustrating an embodiment following step S903. Figure 11 This is a schematic diagram of the seventh embodiment of the partial structure of the CNC machine tool of this application. Considering that the rotary cylinder 220 needs to be reset so that it does not need to be reset again when changing tools next time, thus facilitating quick tool changes, after step S903, the following is also included: S904: Control the second drive mechanism 400 to drive the support 110 to move along the second linear guide 410 to the second target position B near the main shaft 30.

[0075] Specifically, after placing the second tool, it needs to return to the position where the rotary cylinder 220 can rotate, which means that the support 110 needs to be controlled to be close to the spindle 30, i.e., the second target position B.

[0076] Optionally, by supplying air to the second air inlet of the linear cylinder 430, the movable end of the linear cylinder 430 pulls the support 110 toward the main shaft 30 until the second switch connector on the support 110 contacts the second contact switch, triggering the second trigger signal, thus determining that the support 110 has reached the second target position B.

[0077] S905: Control the first drive mechanism 100 to drive the moving base 210 to move along the first linear guide rail 120 to the fifth target position E.

[0078] Specifically, the rotary cylinder 220 needs to be able to rotate, and the moving base 210 needs to be moved to the fifth target position E by controlling the first drive mechanism 100.

[0079] Optionally, the motor 130 drives the lead screw 140 to rotate, which in turn drives the movable female seat 210 to move to the fifth target position E.

[0080] S906: Control the rotary cylinder 220 to reset so that the second clamping member 330 rotates to the spindle.

[0081] Specifically, the first clamping member 320 needs to be rotated to the side of the tool magazine 20, and the second clamping member 330 needs to be rotated to the side of the spindle 30, so as to facilitate subsequent tool removal or tool replacement.

[0082] Optionally, air is supplied to the fourth air inlet of the rotary cylinder 220, causing the rotating shaft of the rotary cylinder 220 to rotate 180 degrees in the opposite direction, that is, return to the starting position angle, the first clamping member 320 rotates to the original position of the second clamping member 330, and the second clamping member 330 rotates to the original position of the first clamping member 320.

[0083] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A rotary converting knife apparatus characterized by, The rotating tool changing device comprises: a first driving mechanism comprising a support base and a first linear guide rail arranged on the support base and extending in a first direction, the first direction being a height direction; a rotating mechanism comprising a moving female base slidingly arranged on the first linear guide rail and a rotary cylinder mounted on the moving female base, a rotating shaft of the rotary cylinder being rotatable relative to a body of the rotary cylinder, an extending direction of the rotating shaft being perpendicular to the first direction; a tool changing assembly comprising a fixed base connected with the rotating shaft of the rotary cylinder and a first clamping member and a second clamping member mounted on the fixed base, the fixed base rotating with the rotating shaft of the rotary cylinder, the first clamping member and the second clamping member being used for clamping a tool; a second driving mechanism comprising a second linear guide rail arranged in a second direction, the support base slidingly arranged on the second linear guide rail, the second direction intersecting the first direction.

2. The rotating tool changing device according to claim 1, wherein the second driving mechanism further comprises a base plate and a linear cylinder, the linear cylinder being fixed on one side of the base plate, the second linear guide rail being arranged on the base plate, the linear cylinder comprising a movable end, the movable end being fixedly connected with the support base, the movable end being movable in the second direction.

3. The rotary knife blade apparatus of claim 2, wherein, the second driving mechanism further comprises a first detection sensor and a second detection sensor arranged on the base plate and spaced apart along the second direction, the first detection sensor generating a first trigger signal when the support base slides along the second linear guide rail to a first target position adjacent to a tool magazine, the second detection sensor generating a second trigger signal when the support base slides along the second linear guide rail to a second target position adjacent to a main shaft.

4. The rotating tool changing device according to claim 3, wherein the first detection sensor comprises a first contact switch, the support base being provided with a first switch joint matched with the first contact switch, the first contact switch generating the first trigger signal after contacting the first switch joint when the support base slides to the first target position; the second detection sensor comprises a second contact switch, the support base being provided with a second switch joint matched with the second contact switch, the second contact switch generating the second trigger signal after contacting the second switch joint when the support base slides to the second target position.

5. The rotating tool changing device according to claim 1, wherein the first driving mechanism further comprises a motor and a lead screw, the lead screw being arranged in parallel with the first linear guide rail and connected with an output shaft of the motor, so that the lead screw rotates under the driving of the motor, the moving female base being rotatably sleeved on the lead screw.

6. The rotating tool changing device according to claim 1, wherein the first clamping member and the second clamping member are connected with the fixed base at positions opposite to each other on the rotating shaft.

7. A numerically controlled machine tool, characterized by comprising: The numerical control machine tool comprises the rotary tool changer as claimed in any one of claims 1-6, and further comprises: a tool magazine and a spindle, which are distributed on both sides of the rotary tool changer; a controller, which is in communication connection with the tool magazine, the spindle and the rotary tool changer.

8. A control method of a numerical control machine tool, characterized by, The method is applied in the numerical control machine tool as claimed in claim 7, and the method comprises: in response to the spindle needing to replace a first tool in the tool magazine, controlling the second driving mechanism to drive the support base to move along the second linear guide rail to a first target position close to the tool magazine; controlling the first driving mechanism to drive the mobile mother seat to move along the first linear guide rail until the mobile mother seat reaches a third target position, wherein the third target position is the height at which the first clamping member clamps a tool in the tool magazine; controlling the first clamping member to clamp the first tool in the tool magazine; controlling the first driving mechanism to drive the mobile mother seat to move away from the tool magazine along the first linear guide rail until the mobile mother seat reaches a fourth target position, wherein the fourth target position is the height at which the first clamping member completely takes out a tool in the tool magazine; controlling the second driving mechanism to drive the support base to move along the second linear guide rail to a second target position close to the spindle; controlling the first driving mechanism to drive the mobile mother seat to move along the first linear guide rail to a fifth target position, wherein the fifth target position is used for rotating the first clamping member and the second clamping member; controlling the rotary shaft of the rotary cylinder to rotate so as to turn the first clamping member towards the spindle; controlling the first driving mechanism to drive the mobile mother seat to move along the first linear guide rail to a sixth target position close to the spindle, wherein the sixth target position is the height at which the second clamping member clamps a tool on the spindle; controlling the spindle to clamp the first tool and controlling the first clamping member to release the first tool.

9. The method of claim 8, wherein, The fourth target position is the same as the sixth target position, and after the step of controlling the second driving mechanism to drive the support base to move along the second linear guide rail to the second target position close to the spindle, the method further comprises: controlling the second clamping member to clamp a second tool on the spindle and controlling the spindle to release the second tool; after the step of controlling the spindle to clamp the first tool and controlling the first clamping member to release the first tool, the method further comprises: controlling the second driving mechanism to drive the support base to move along the second linear guide rail to the first target position close to the tool magazine; controlling the first driving mechanism to drive the mobile mother seat to move along the first linear guide rail until the mobile mother seat reaches the third target position; controlling the second clamping member to release the second tool in the tool magazine.

10. The method of claim 9, wherein, after the step of controlling the second clamping member to release the second tool in the tool magazine, the method further comprises: controlling the second driving mechanism to drive the support base to move along the second linear guide rail to the second target position close to the spindle; controlling the second driving mechanism to drive the support base to move along the second linear guide rail to a second target position close to the main shaft; controlling the first driving mechanism to drive the moving female seat to move along the first linear guide rail to a fifth target position; controlling the slewing cylinder to reset, so that the second clamping piece turns to the main shaft.

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