Multi-spindle compound machine tool with convenient tool changing

Abstract

The present application relates to the technical field of machine tool, especially to a multi-spindle compound machine tool with convenient tool changing, comprising a machine tool main body, a plurality of spindles are installed in the machine tool main body, one tool magazine is correspondingly arranged on one side of each spindle, the tool magazine is fixed on the machine tool main body, a tool changing manipulator is installed between the tool magazine and the spindle, a vertical shaft is correspondingly arranged below the tool claw at any one end of the tool changing arm of the tool changing manipulator, the vertical shaft is rotationally connected to a support frame, the support frame is fixed on the tool changing arm, a driving motor is drivingly connected to the vertical shaft, a turntable is coaxially fixed on the top end of the vertical shaft, a brushing mechanism and a flushing mechanism are circumferentially and intervally arranged on the turntable. The present application is provided with a structure composed of a brushing mechanism, a flushing mechanism and the like for cleaning the tool on each tool changing manipulator, so that the tool can be quickly flushed and brushed during the tool changing process of the tool changing manipulator, the tool surface debris residue is greatly reduced, and the maintenance frequency of the tool magazine is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and in particular to a multi-spindle composite machine tool that facilitates tool changing. Background Technology

[0002] Multi-spindle composite machine tools adopt a single-piece special machine design scheme. Due to the high processing frequency and large volume of the processed parts, the equipment is specially customized for each piece. In addition to using conventional products, it can also be specially designed according to the special requirements of customers. It can effectively save the investor's manpower, material resources and financial resources. In particular, the automation of the machine tool greatly reduces the labor intensity of the operator. Existing multi-spindle composite machine tools, due to their multiple spindles, require manual tool changing for each spindle, which significantly restricts machining efficiency. To facilitate tool changing and improve efficiency, a tool changing device is installed at each spindle. This device consists of a tool magazine and a tool changing robot. In actual use, during the process of the tool changing robot removing the tool from the spindle and replacing it with the tool magazine, some tools, even after being washed by cutting fluid during workpiece machining, still retain considerable debris on their surface. This debris follows the tool into the tool magazine, causing debris accumulation over time and potentially leading to mechanical failures. Therefore, frequent tool magazine maintenance is required. Multi-spindle composite machine tools, with their multiple tool magazines, require significant maintenance, making them extremely inconvenient. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies that require multiple tool changing devices for convenient tool changing, which leads to cumbersome tool magazine maintenance. The invention proposes a multi-spindle composite machine tool that facilitates tool changing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Design a multi-spindle composite machine tool for convenient tool changing, comprising a machine tool body, in which multiple spindles are installed, and each spindle has a corresponding tool magazine on one side, the tool magazine being fixed to the machine tool body, a tool changing robot being installed between the tool magazine and the spindle, a vertical shaft being correspondingly provided below the tool claw at any end of the tool changing arm of the tool changing robot, the vertical shaft being rotatably connected to a support frame, the support frame being fixed to the tool changing arm, a drive motor being driven to the vertical shaft, and a turntable being coaxially fixed to the top of the vertical shaft, the turntable being provided with a brushing mechanism and a rinsing mechanism spaced apart along the circumference.

[0006] Preferably, the brushing mechanism includes a rotating drum. A mounting groove is circumferentially formed on the outer surface of the rotating drum. An air storage cylinder is fixedly installed in each mounting groove. A first skin covers and fixes the outer end of the air storage cylinder, and a second skin covers and fixes the inner end of the air storage cylinder. The first and second skins seal both ends of the air storage cylinder. Several stiff bristles are fixed to the outer surface of the first skin, and several first magnetic blocks are fixed to the second skin. A rotating shaft is coaxially rotatably connected to the bottom end of the rotating drum. The rotating shaft is rotatably connected to a turntable and is driven by a rotary motor. A fixed cylinder is coaxially inserted inside the rotating drum and fixed to the turntable. Several second magnetic blocks are circumferentially spaced on the fixed cylinder on the side away from the central axis of the rotating shaft. The first and second magnetic blocks repel each other.

[0007] There are two working states between the first skin and the second skin: In the first working state, the first magnetic block corresponds to the second magnetic block. At this time, the first magnetic block is repelled by the second magnetic block. The first magnetic block drives the second skin to retract inward, thereby squeezing the gas in the gas storage cylinder and causing the first skin to expand; In the second working state, the first magnetic block is misaligned with the second magnetic block. At this time, the first magnetic block does not move, so that both the first skin and the second skin are in a flat state.

[0008] Preferably, both the first skin and the second skin are made of highly elastic rubber.

[0009] Preferably, both the first magnetic block and the second magnetic block are elongated.

[0010] Preferably, a flexible blanket is provided on the outer side of the rotating drum, the flexible blanket is provided corresponding to the rotating drum, one end of the flexible blanket is wound and fixed on the take-up shaft, the other end of the flexible blanket is wound and fixed on the unloading shaft, the take-up shaft and the unloading shaft are both arranged parallel to the rotating drum, the bottom ends of the take-up shaft and the unloading shaft are rotatably connected to the turntable, and the take-up shaft is driven by a take-up motor.

[0011] Each of the second magnetic blocks is configured to correspond to a flexible blanket.

[0012] Preferably, the flexible blanket is made of sponge material.

[0013] Preferably, the gas storage cylinder has a rectangular cross-section.

[0014] Preferably, the rinsing mechanism includes a rinsing pipe, which is arranged parallel to the vertical axis. Several spray holes are opened through the rinsing pipe along its length on the side facing the vertical axis. The rinsing pipe is fixed on the turntable and is used to connect to a cleaning fluid supply device.

[0015] The multi-spindle composite machine tool proposed in this invention, which facilitates tool changing, has the following advantages:

[0016] By equipping each tool changer with a structure consisting of a vertical shaft, a turntable, a brushing mechanism, and a rinsing mechanism for cleaning the tools, the tool changer can quickly rinse and brush the tools during the tool change process, greatly reducing the amount of debris left on the tool surface and significantly reducing the maintenance frequency of the tool magazine.

[0017] By intermittently setting multiple second magnetic blocks, during the rotation of the drum, the first magnetic block on the second skin of each air cylinder can intermittently interact with the second magnetic block, causing the second skin to repeatedly contract under the influence of the first magnetic block. This, in turn, allows the second skin to continuously and rapidly expand back and forth, causing the hard bristles on the second skin to vibrate back and forth, shaking off any residual iron filings. Furthermore, the second magnetic blocks are positioned correspondingly to the flexible blanket, so that when an air cylinder moves to the position aligned with the flexible blanket, the first magnetic block on the second skin at the inner end of the air cylinder is precisely aligned with the second magnetic block, causing the first skin to expand. During the expansion of the first skin, the hard bristles are pushed outward, allowing the outer ends of the hard bristles to insert into the flexible blanket for cleaning. This dual cleaning mechanism ensures that the hard bristles in the brushing mechanism remain clean, thus guaranteeing the cleaning effect on the blades. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a multi-spindle composite machine tool that facilitates tool changing, as proposed in this invention.

[0019] Figure 2 This is a schematic diagram of the turntable position structure of a multi-spindle composite machine tool that facilitates tool changing, as proposed in this invention.

[0020] Figure 3 This invention provides a schematic diagram of the flushing and brushing mechanism for a multi-spindle composite machine tool that facilitates tool changing. Figure 1 ;

[0021] Figure 4 This invention provides a schematic diagram of the flushing and brushing mechanism for a multi-spindle composite machine tool that facilitates tool changing. Figure 2 ;

[0022] Figure 5 This invention provides a schematic diagram of the flushing and brushing mechanism for a multi-spindle composite machine tool that facilitates tool changing. Figure 3 ;

[0023] Figure 6 This is a schematic diagram of the rotary drum structure of a multi-spindle composite machine tool that facilitates tool changing, as proposed in this invention.

[0024] Figure 7A cross-sectional view of the brushing mechanism for a multi-spindle composite machine tool that facilitates tool changing, as proposed in this invention. Figure 1 ;

[0025] Figure 8 A cross-sectional view of the brushing mechanism for a multi-spindle composite machine tool that facilitates tool changing, as proposed in this invention. Figure 2 .

[0026] In the diagram: 1. Tool changing arm; 2. Tool claw; 3. Support frame; 4. Vertical shaft; 5. Turntable; 6. Drive motor; 7. Flushing pipe; 8. Rotary drum; 9. Rotary shaft; 10. Rotary motor; 11. Air storage tank; 12. First skin; 13. Hard bristles; 14. Second skin; 15. First magnetic block; 16. Fixed cylinder; 17. Second magnetic block; 18. Flexible blanket; 19. Rewinding shaft; 20. Rewinding motor; 21. Unloading shaft; 22. Machine tool body; 23. Spindle; 24. Tool magazine; 25. Tool changing robot. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1: Refer to Figures 1-2 , Figures 6-7 A multi-spindle composite machine tool for convenient tool changing includes a machine tool body 22, in which multiple spindles 23 are installed. Each spindle 23 has a corresponding tool magazine 24 on one side. The tool magazine 24 is fixed on the machine tool body 22. A tool changing robot 25 is installed between the tool magazine 24 and the spindles 23. A vertical shaft 4 is correspondingly provided below the tool claw 2 at any end of the tool changing arm 1 of the tool changing robot 25. The vertical shaft 4 is rotatably connected to a support frame 3. The support frame 3 is fixed on the tool changing arm 1. The vertical shaft 4 is driven by a drive motor 6. A turntable 5 is coaxially fixed at the top of the vertical shaft 4. A brushing mechanism and a rinsing mechanism are arranged at intervals along the circumference of the turntable 5.

[0029] The scrubbing mechanism includes a rotating drum 8. A mounting groove is circumferentially formed on the outer surface of the rotating drum 8. An air reservoir 11 is fixedly installed in each mounting groove. A first skin 12 covers and is fixed to the outer end of the air reservoir 11, and a second skin 14 covers and is fixed to the inner end of the air reservoir 11. The first skin 12 and the second skin 14 seal both ends of the air reservoir 11. Several stiff bristles 13 are fixed to the outer surface of the first skin 12, and several first magnetic blocks 15 are fixed to the second skin 14. A rotating shaft 9 is coaxially rotatably connected to the bottom end of the rotating drum 8. The rotating shaft 9 is rotatably connected to a turntable 5. A rotary motor 10 is connected to the transmission. A fixed cylinder 16 is coaxially inserted inside the rotating drum 8. The fixed cylinder 16 is fixed on the turntable 5. Several second magnetic blocks 17 are fixed circumferentially on the fixed cylinder 16 away from the central axis of the rotating shaft 9. The first magnetic block 15 and the second magnetic block 17 repel each other. By arranging the second magnetic blocks 17 at intervals, the first magnetic block 15 on the second skin 14 of each air storage cylinder 8 can have an intermittent magnetic force interaction with the second magnetic block 17 during the rotation of the rotating drum 8. This allows the second skin 14 to repeatedly contract under the drive of the first magnetic block 15, and thus allows the second skin 14 to continuously and rapidly expand back and forth. This allows the hard bristles 13 on the second skin 14 to shake back and forth, so as to shake off the iron filings remaining on the hard bristles 13.

[0030] There are two working states between the first skin 12 and the second skin 14: In the first working state, the first magnetic block 15 corresponds to the second magnetic block 17. At this time, the first magnetic block 15 is repelled by the second magnetic block 17. The first magnetic block 15 drives the second skin 14 to retract inward, thereby squeezing the gas in the gas storage cylinder 11 and causing the first skin 12 to expand. In the second working state, the first magnetic block 15 and the second magnetic block 17 are misaligned. At this time, the first magnetic block 15 does not move, so that both the first skin 12 and the second skin 14 are in a flat state.

[0031] Both the first skin 12 and the second skin 14 are made of highly elastic rubber. Both the first magnetic block 15 and the second magnetic block 17 are elongated. The air reservoir 11 has a rectangular cross-section. The rectangular air reservoir 11 can better adapt to the length of the blade, thus achieving a better cleaning effect.

[0032] The rinsing mechanism includes a rinsing pipe 7, which is arranged parallel to the vertical axis 4. Several spray holes are opened through the rinsing pipe 7 along its length on the side facing the vertical axis 4. The rinsing pipe 7 is fixed on the turntable 5 and is used to connect to the cleaning fluid supply device.

[0033] Example 2: In Example 1, the intermittent expansion of the first skin 12 drives the hard brush bristles 13 to shake off iron filings, but it is still difficult to remove some debris adhering to the hard brush bristles 13. (Refer to...) Figures 3-5 , Figure 8In another preferred embodiment of the present invention, the difference from embodiment 1 is that a flexible blanket 18 is correspondingly arranged on the outer side of the rotating drum 8. The flexible blanket 18 is arranged correspondingly to the rotating drum 8. One end of the flexible blanket 18 is wound and fixed on the take-up shaft 19, and the other end of the flexible blanket 18 is wound and fixed on the feed shaft 21. The take-up shaft 19 and the feed shaft 21 are both arranged parallel to the rotating drum 8. The bottom ends of the take-up shaft 19 and the feed shaft 21 are rotatably connected to the turntable 5. The take-up shaft 19 is driven by a take-up motor 20. The take-up motor 20 drives the take-up shaft 19 to rotate, so that the take-up shaft 19 can take up the flexible blanket 18. The feed shaft 21 rotates automatically under the pull of the flexible blanket 18. The take-up shaft 19 and the feed shaft 21 cooperate to realize the movement of the flexible blanket 18, so that the flexible blanket 18 can align the new part with the rotating drum 8.

[0034] Any one of the second magnetic blocks 17 is correspondingly set with the flexible blanket 18. By correspondingly setting the second magnetic block 17 with the flexible blanket 18, when an air cylinder 11 moves to the position aligned with the flexible blanket 18, the first magnetic block 15 on the second skin 14 at the inner end of the air cylinder 11 is exactly aligned with the second magnetic block 17, which causes the first skin 12 to expand. During the expansion of the first skin 12, the hard bristles 13 are pushed outward, so that the outer ends of the hard bristles 13 can be inserted into the flexible blanket 18.

[0035] The flexible blanket 18 is made of sponge. The thickness of the flexible blanket 18 is small, controlled within 0.1 mm, so that the hard brush bristles 13 can be inserted into the flexible blanket 18, allowing the flexible blanket 18 to better trap the iron filings remaining on the hard brush bristles 13. This allows the flexible blanket 18 to thoroughly remove the iron filings remaining at the outer ends of the hard brush bristles 13. Simultaneously, the flexible blanket 18 is equipped with a take-up shaft 19 and a feed shaft 21, allowing it to move continuously to align the new portion with the rotating drum 8.

[0036] The overall workflow of this invention is as follows:

[0037] Whenever a tool needs to be changed on a spindle 23, the tool magazine 24 and the tool changing robot 25 work together to change the tool on the spindle 23. During the tool changing process, when the tool pawl 2 at one end of the tool changing robot 25 grabs the tool holder on the spindle 23, the drive motor 6 is started. The drive motor 6 drives the vertical shaft 4 to rotate. The vertical shaft 4 drives the turntable 5 to make a circular motion. The turntable drives the brushing mechanism and the rinsing mechanism to make a circular motion around the tool. The rinsing mechanism rinses the tool, and the brushing mechanism brushes the tool.

[0038] The scrubbing mechanism operates as follows: (see attached) Figure 7-8As shown, during the circular motion of the rotating drum 8 around the cutter, the rotary motor 10 synchronously drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the rotating drum 8 to rotate. During the rotation of the rotating drum 8, whenever one of the air storage cylinders 11 on the rotating drum 8 is aligned with the cutter, the first magnetic block 15 on the second skin 14 and the second magnetic block 17 on the fixed cylinder 16 are misaligned. The first skin 12 and the second skin 14 remain flat, allowing the hard bristles 13 on the first skin 12 to brush the cutter surface. The hard bristles 13 sweep away the iron filings remaining on the cutter, and a small amount of iron filings stick to the outer end of the hard bristles 13. As the rotating drum 8 continues to rotate, the first magnetic block 15 on the second skin 14 of each air storage cylinder 11 can intermittently interact with the second magnetic block 17, causing the second skin 14 to repeatedly contract under the action of the first magnetic block 15. This allows the second skin 14 to expand rapidly and repeatedly, causing the stiff bristles 13 on the second skin 14 to vibrate repeatedly, shaking off any remaining iron filings. When the air storage cylinder 11 moves to the side close to the flexible blanket 18, the first magnetic block 15 on the second skin 14 of the air storage cylinder 11 is aligned with the second magnetic block 17 on the fixed cylinder 16. At this time, the first magnetic block 15 is repelled by the second magnetic block 17, causing the first magnetic block 15 to pull the second skin 14 inward, thereby compressing the gas inside the air storage cylinder 11, causing the first skin 12 to expand. The skin 12 expands outward, causing the first skin 12 to unfold in an arc shape, which in turn causes the hard bristles 13 to unfold outward. The outward-expanding hard bristles 13 will insert into the flexible blanket 18. As the rotating drum 8 continues to move, the first magnetic block 15 and the second magnetic block 17 are misaligned. At this time, the first skin 12 contracts, which in turn drives the hard bristles 13 to retract. During the retraction of the hard bristles 13, the iron filings on the hard bristles 13 will be trapped by the flexible blanket 18. In this way, the hard bristles 13 can always be kept clean during the brushing process of the brushing mechanism, thereby obtaining a better cleaning effect for the blade.

[0039] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-spindle composite machine tool with convenient tool changing, comprising a machine tool body (22), characterized in that, Multiple spindles (23) are installed inside the machine tool body (22). Each spindle (23) has a corresponding tool magazine (24) on one side. The tool magazine (24) is fixed on the machine tool body (22). A tool changing robot (25) is installed between the tool magazine (24) and the spindle (23). A vertical shaft (4) is correspondingly provided below the claw (2) at any end of the tool changing arm (1) of the tool changing robot (25). The vertical shaft (4) is rotatably connected to the support frame (3). The support frame (3) is fixed on the tool changing arm (1). The vertical shaft (4) is driven by a drive motor (6). A turntable (5) is coaxially fixed at the top of the vertical shaft (4). A brushing mechanism and a rinsing mechanism are arranged at intervals along the circumference of the turntable (5). The brushing mechanism includes a rotating drum (8). A mounting groove is circumferentially opened on the outer surface of the rotating drum (8). An air reservoir (11) is fixedly installed in each mounting groove. A first skin (12) covers and fixes the outer end of the air reservoir (11), and a second skin (14) covers and fixes the inner end of the air reservoir (11). The first skin (12) and the second skin (14) seal both ends of the air reservoir (11). Several stiff bristles (13) are fixed to the outer surface of the first skin (12), and the second skin (14) is fixed with… There are several first magnetic blocks (15). A rotating shaft (9) is coaxially rotatably connected to the bottom end of the rotating cylinder (8). The rotating shaft (9) is rotatably connected to the turntable (5). A rotating motor (10) is driven by the rotating shaft (9). A fixed cylinder (16) is coaxially inserted inside the rotating cylinder (8). The fixed cylinder (16) is fixed on the turntable (5). Several second magnetic blocks (17) are fixed circumferentially on the fixed cylinder (16) away from the central axis of the rotating shaft (9). The first magnetic blocks (15) and the second magnetic blocks (17) repel each other. There are two working states between the first skin (12) and the second skin (14): The first working state is that the first magnetic block (15) corresponds to the second magnetic block (17). At this time, the first magnetic block (15) is subjected to the repulsive force of the second magnetic block (17). The first magnetic block (15) drives the second skin (14) to shrink inward, thereby squeezing the gas in the gas storage cylinder (11) and causing the first skin (12) to expand; The second working state is that the first magnetic block (15) and the second magnetic block (17) are misaligned. At this time, the first magnetic block (15) does not move, so that both the first skin (12) and the second skin (14) are in a flat state. Both the first skin (12) and the second skin (14) are made of highly elastic rubber; Both the first magnetic block (15) and the second magnetic block (17) are elongated.

2. The multi-spindle composite machine tool with convenient tool changing according to claim 1, characterized in that, A flexible blanket (18) is provided on the outer side of the rotating drum (8). The flexible blanket (18) is provided in relation to the rotating drum (8). One end of the flexible blanket (18) is wound and fixed on the take-up shaft (19), and the other end of the flexible blanket (18) is wound and fixed on the unloading shaft (21). The take-up shaft (19) and the unloading shaft (21) are both arranged parallel to the rotating drum (8). The bottom ends of the take-up shaft (19) and the unloading shaft (21) are rotatably connected to the turntable (5). The take-up shaft (19) is driven by a take-up motor (20). Any one of the second magnetic blocks (17) is set in correspondence with the flexible blanket (18).

3. The multi-spindle composite machine tool with convenient tool changing according to claim 2, characterized in that, The flexible blanket (18) is made of sponge material.

4. The multi-spindle composite machine tool with convenient tool changing according to claim 2, characterized in that, The gas storage cylinder (11) has a rectangular cross-section.

5. The multi-spindle composite machine tool with convenient tool changing according to claim 1, characterized in that, The rinsing mechanism includes a rinsing pipe (7), which is arranged parallel to the vertical axis (4). Several spray holes are opened through the rinsing pipe (7) along its length on the side facing the vertical axis (4). The rinsing pipe (7) is fixed on the turntable (5) and is used to connect to the cleaning fluid supply device.

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