Multi-spindle composite machine tool facilitating tool changing

Abstract

The invention relates to the technical field of machine tools, in particular to a multi-spindle compound machine tool convenient for tool changing, which comprises a machine tool main body, a plurality of spindles are mounted in the machine tool main body, a tool magazine is correspondingly arranged on one side of each spindle, the tool magazines are fixed on the machine tool main body, and tool changing manipulators are mounted between the tool magazines and the spindles. A vertical shaft is correspondingly arranged below a tool claw at any end of a tool changing arm of the tool changing mechanical arm, the vertical shaft is rotationally connected to a supporting frame, the supporting frame is fixed to the tool changing arm, the vertical shaft is in transmission connection with a driving motor, a rotating disc is coaxially fixed to the top end of the vertical shaft, and a scrubbing mechanism and a flushing mechanism are arranged on the rotating disc in the circumferential direction at intervals. Each tool changing manipulator is provided with a structure which is composed of the brushing mechanism, the flushing mechanism and the like and used for cleaning the tool, so that in the tool changing process of the tool changing manipulators, the tools can be quickly flushed and brushed, residual chippings on the surfaces of the tools are greatly reduced, and the tool changing efficiency is improved. And the maintenance frequency of the tool magazine is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of machine tools, and in particular to a multi-spindle compound machine tool with convenient tool change. Background Art

[0002] The multi-spindle compound machine tool adopts the design of a single-piece special machine. According to the high processing frequency and large quantity of the workpiece, it is specially tailored to be one piece and one machine. In addition to using conventional products, it can also be specially designed according to the special requirements of customers, which can effectively save the manpower, material and financial resources of the investor. In particular, the automation of the machine tool greatly reduces the labor intensity of the operator. When using an existing multi-spindle compound machine tool, since it is provided with multiple spindles, if the tool is changed manually one by one on the spindles, the processing efficiency of the machine tool will be greatly restricted. In order to facilitate tool change and improve processing efficiency, a tool changing device is arranged corresponding to each spindle in the machine tool. The tool changing device is composed of a tool magazine and a tool changing robot. In actual use, when the tool changing robot removes the tool on the spindle and replaces it into the tool magazine, some tools are flushed with cutting fluid during processing of the workpiece, but a lot of debris still remains on the surface. These debris follow the tool into the tool magazine. Over time, the debris will accumulate in the tool magazine, which is prone to mechanical failure. Therefore, the tool magazine needs to be maintained frequently. However, since the multi-spindle compound machine tool is provided with multiple tool magazines, the maintenance workload is large and it is very inconvenient. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that in the prior art, multiple tool changing devices are provided for convenient tool changing, which makes tool magazine maintenance more troublesome, and to propose a multi-spindle compound machine tool for convenient tool changing.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions: A multi-spindle compound machine tool for convenient tool changing is designed, comprising a machine tool body, wherein a plurality of spindles are installed in the machine tool body, a tool magazine is correspondingly arranged on one side of each spindle, the tool magazine is fixed on the machine tool body, a tool changing robot is installed between the tool magazine and the spindle, a vertical shaft is correspondingly arranged below the tool claw at either end of the tool changing arm of the tool changing robot, the vertical shaft is rotatably connected to a support frame, the support frame is fixed on the tool changing arm, the vertical shaft is transmission-connected to a driving motor, a turntable is coaxially fixed to the top end of the vertical shaft, and a brushing mechanism and a flushing mechanism are arranged at intervals along the circumference of the turntable.

[0005] Preferably, the brushing mechanism comprises a rotating drum, the outer surface of the rotating drum is provided with mounting grooves along the circumferential direction, an air cylinder is fixedly installed in each of the mounting grooves, the outer end of the air cylinder is covered and fixed with a first skin, the inner end of the air cylinder is covered and fixed with a second skin, the first skin and the second skin seal the two ends of the air cylinder, a plurality of hard bristles are fixed on the outer surface of the first skin, a plurality of first magnetic blocks are fixed on the second skin, a rotating shaft is coaxially connected to the bottom end of the rotating drum for rotation, the rotating shaft is rotatably connected to a turntable, a rotating motor is transmission-connected to the rotating shaft, a fixed cylinder is coaxially inserted in the rotating drum, the fixed cylinder is fixed on the turntable, a plurality of second magnetic blocks are fixed on the fixed cylinder at intervals along the circumferential direction on the side away from the central axis of the rotating shaft, the first magnetic blocks and the second magnetic blocks repel each other; 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 subjected to the repulsive force of the second magnetic block, and the first magnetic block drives the second skin to shrink, thereby squeezing the gas in the gas cylinder, so that the first skin expands; in the second working state, the first magnetic block is staggered with the second magnetic block, at this time, the first magnetic block does not move, so that the first skin and the second skin are both in a flat state.

[0006] Preferably, the first skin and the second skin are both made of high-elastic rubber.

[0007] Preferably, the first magnetic block and the second magnetic block are both in the shape of elongated strips.

[0008] Preferably, a flexible blanket is arranged corresponding to the outer side of the rotating drum, and the flexible blanket is arranged corresponding to the rotating drum. One end of the flexible blanket is wound and fixed on the winding shaft, and the other end of the flexible blanket is wound and fixed on the unwinding shaft. The winding shaft and the unwinding shaft are both arranged parallel to the rotating drum, and the bottom ends of the winding shaft and the unwinding shaft are both rotatably connected to the turntable, and the winding shaft is transmission-connected to the winding motor; Any one of the second magnetic blocks is arranged corresponding to the flexible blanket.

[0009] Preferably, the flexible blanket is made of sponge material.

[0010] Preferably, the cross section of the gas storage cylinder is rectangular.

[0011] Preferably, the flushing mechanism includes a flushing pipe, which is arranged parallel to the vertical axis, and has a plurality of spray holes extending through the flushing pipe along its length direction toward one side of the vertical axis. The flushing pipe is fixed on the turntable, and is used to connect to a cleaning liquid supply device.

[0012] The invention provides a multi-spindle compound machine tool that is convenient for tool change, and has the following beneficial effects: By arranging a structure for cleaning the tool, which is composed of a vertical shaft, a rotating disk, a brushing mechanism, a flushing mechanism, etc., on each tool changing manipulator, the tool can be quickly flushed and brushed during the tool changing process, which greatly reduces the debris residue on the tool surface and greatly reduces the maintenance frequency of the tool magazine; By arranging multiple second magnetic blocks at intervals, during the rotation of the drum, the first magnetic block on the second skin of each air cylinder can have intermittent magnetic action with the second magnetic block, so that the second skin can be driven by the first magnetic block to repeatedly shrink, so that the second skin can continuously and rapidly expand back and forth, and the hard bristles on the second skin can shake back and forth to shake off the iron filings remaining on the hard bristles; in addition, the second magnetic block is arranged corresponding to the flexible blanket, so that when an air cylinder moves to align with the flexible blanket position, the first magnetic block on the second skin at the inner end of the air cylinder is just aligned with the second magnetic block, so that the first skin will expand, and during the expansion of the first skin, the hard bristles will be pushed outward, so that the outer ends of the hard bristles can be inserted into the flexible blanket for cleaning, so that the hard bristles in the brushing mechanism can always be kept clean under the guarantee of double cleaning measures, thereby ensuring the cleaning effect of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of a multi-spindle compound machine tool for convenient tool change proposed by the present invention; Figure 2 A schematic diagram of the rotary table position structure of a multi-spindle compound machine tool for convenient tool change proposed by the present invention; Figure 3 The schematic diagram of the structure of the flushing mechanism and brushing mechanism of a multi-spindle compound machine tool for convenient tool change proposed by the present invention Figure 1 ; Figure 4 The schematic diagram of the structure of the flushing mechanism and brushing mechanism of a multi-spindle compound machine tool for convenient tool change proposed by the present invention Figure 2 ; Figure 5 The schematic diagram of the structure of the flushing mechanism and brushing mechanism of a multi-spindle compound machine tool for convenient tool change proposed by the present invention Figure 3 ; Figure 6 A schematic diagram of a rotary drum structure of a multi-spindle compound machine tool for convenient tool change proposed by the present invention; Figure 7 A schematic cross-sectional view of a brushing mechanism for a multi-spindle compound machine tool for convenient tool change proposed by the present invention Figure 1 ; Figure 8 A schematic cross-sectional view of a brushing mechanism for a multi-spindle compound machine tool for convenient tool change proposed by the present invention Figure 2 .

[0014] In the figure: 1. tool changing arm; 2. tool claw; 3. support frame; 4. vertical axis; 5. turntable; 6. drive motor; 7. flushing pipe; 8. rotating drum; 9. rotating shaft; 10. rotating motor; 11. air storage cylinder; 12. first skin; 13. hard bristles; 14. second skin; 15. first magnetic block; 16. fixed cylinder; 17. second magnetic block; 18. flexible blanket; 19. winding shaft; 20. winding motor; 21. unwinding shaft; 22. machine tool body; 23. spindle; 24. tool magazine; 25. tool changing robot. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0016] Example 1: Reference Figure 1-Figure 2 , Figure 6-Figure 7 A multi-spindle compound machine tool for convenient tool changing includes a machine tool body 22, in which multiple spindles 23 are installed, and a tool magazine 24 is correspondingly arranged on one side of each spindle 23, and the tool magazine 24 is fixed on the machine tool body 22. A tool changing manipulator 25 is installed between the tool magazine 24 and the spindle 23, and a vertical shaft 4 is correspondingly arranged below the tool claw 2 at either end of the tool changing arm 1 of the tool changing manipulator 25, and the vertical shaft 4 is rotatably connected to the support frame 3, and the support frame 3 is fixed on the tool changing arm 1, and the vertical shaft 4 is transmission-connected to a driving motor 6, and a turntable 5 is coaxially fixed to the top of the vertical shaft 4, and a brushing mechanism and a flushing mechanism are arranged at intervals along the circumferential direction on the turntable 5.

[0017] The scrubbing mechanism includes a rotating drum 8, the outer surface of which is provided with mounting grooves along the circumferential direction, and an air storage cylinder 11 is fixedly installed in each mounting groove. The outer end of the air storage cylinder 11 is covered and fixed with a first skin 12, and the inner end of the air storage cylinder 11 is covered and fixed with a second skin 14. The first skin 12 and the second skin 14 seal the two ends of the air storage cylinder 11. A plurality of hard bristles 13 are fixed on the outer surface of the first skin 12, and a plurality of first magnetic blocks 15 are fixed on the second skin 14. The bottom end of the rotating drum 8 is coaxially connected to a rotating shaft 9, and the rotating shaft 9 is rotatably connected to the turntable 5. The rotating shaft 9 The transmission is connected with a rotating motor 10, and a fixed cylinder 16 is coaxially inserted in the rotating cylinder 8, and the fixed cylinder 16 is fixed on the turntable 5. A plurality of second magnetic blocks 17 are fixed on the fixed cylinder 16 at intervals along the circumferential direction on the side away from the central axis of the rotating shaft 9, and the first magnetic block 15 and the second magnetic block 17 repel each other; by arranging the second magnetic blocks 17 at intervals, during the rotation of the rotating cylinder 8, the first magnetic block 15 on the second skin 14 of each air storage cylinder 11 can have intermittent magnetic action with the second magnetic block 17, so that the second skin 14 can be driven by the first magnetic block 15 to repeatedly contract, so that the second skin 14 can continuously and rapidly reciprocate, and then the hard bristles 13 on the second skin 14 can shake back and forth to shake off the iron filings remaining on the hard bristles 13.

[0018] 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, and the first magnetic block 15 drives the second skin 14 to shrink, thereby squeezing the gas in the gas cylinder 11, so that the first skin 12 expands; in the second working state, the first magnetic block 15 is staggered with the second magnetic block 17. At this time, the first magnetic block 15 does not move, so that the first skin 12 and the second skin 14 are both in a flat state.

[0019] The first skin 12 and the second skin 14 are both made of highly elastic rubber. The first magnetic block 15 and the second magnetic block 17 are both in the shape of long strips. The cross section of the air storage cylinder 11 is rectangular. The rectangular air storage cylinder 11 can better adapt to the length of the cutter, thereby achieving a better cleaning effect.

[0020] The flushing mechanism includes a flushing pipe 7, which is arranged parallel to the vertical axis 4. A plurality of spray holes are opened on the flushing pipe 7 along the length direction thereof toward the side of the vertical axis 4. The flushing pipe 7 is fixed on the turntable 5 and is used to connect to the cleaning liquid supply device.

[0021] Embodiment 2: In embodiment 1, the first skin 12 is intermittently expanded to drive the bristles 13 to shake to achieve the shaking of iron chips. However, it is still difficult to remove some debris adhering to the bristles 13. Figure 3-Figure 5 , Figure 8As 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, and the flexible blanket 18 is arranged corresponding to the rotating drum 8. One end of the flexible blanket 18 is wound and fixed on the winding shaft 19, and the other end of the flexible blanket 18 is wound and fixed on the unwinding shaft 21. The winding shaft 19 and the unwinding shaft 21 are both arranged parallel to the rotating drum 8. The bottom ends of the winding shaft 19 and the unwinding shaft 21 are both rotatably connected to the turntable 5. The winding shaft 19 is transmission-connected to the winding motor 20; the winding motor 20 drives the winding shaft 19 to rotate, so that the winding shaft 19 can rewind the flexible blanket 18, and the corresponding unwinding shaft 21 automatically rotates under the pulling of the flexible blanket 18. The winding shaft 19 cooperates with the unwinding shaft 21 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.

[0022] Any second magnetic block 17 is arranged correspondingly to the flexible blanket 18. The second magnetic block 17 is arranged correspondingly to the flexible blanket 18, so that when an air storage cylinder 11 moves to align with the flexible blanket 18, the first magnetic block 15 on the second skin 14 at the inner end of the air storage cylinder 11 is aligned with the second magnetic block 17, so that the first skin 12 will expand. During the expansion of the first skin 12, the hard bristles 13 will be pushed outward, so that the outer ends of the hard bristles 13 can be inserted into the flexible blanket 18.

[0023] The flexible blanket 18 is made of sponge. The thickness of the flexible blanket 18 is small and controlled within 0.1 mm, so that the hard bristles 13 can be inserted into the flexible blanket 18, so that the flexible blanket 18 can better intercept the iron filings remaining on the hard bristles 13. In this way, the flexible blanket 18 can be used to fully remove the iron filings remaining on the outer ends of the hard bristles 13. At the same time, the flexible blanket 18 is correspondingly provided with a winding shaft 19 and a discharge shaft 21, so that it can be continuously moved to align the new part with the rotating drum 8.

[0024] The overall workflow of the present invention is as follows: Whenever a tool needs to be changed on a spindle 23, the tool magazine 24 cooperates with the tool changing manipulator 25 to change the tool on the spindle 23. During the tool changing process, when the tool claw 2 at one end of the tool changing manipulator 25 grabs the handle of the tool on the spindle 23, the drive motor 6 is started, and the drive motor 6 drives the vertical shaft 4 to rotate, and the vertical shaft 4 drives the turntable 5 to make a circular motion, and the rotating shaft drives the brushing mechanism and the flushing mechanism to make a circular motion around the tool, and the flushing mechanism flushes the tool, and the brushing mechanism brushes the tool; When the scrubbing mechanism is working: Figure 7-8As shown, when the drum 8 makes a circular motion around the tool, the rotating motor 10 synchronously drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the drum 8 to rotate. During the rotation of the drum 8, whenever an air storage cylinder 11 on the drum 8 is aligned with the tool, at this time, since the first magnetic block 15 on the second skin 14 and the second magnetic block 17 on the fixed cylinder 16 are in a staggered state, the first skin 12 and the second skin 14 remain flat, so that the hard bristles 13 on the first skin 12 can brush the surface of the tool. On the one hand, the hard bristles 13 will sweep away the iron filings remaining on the tool, and on the other hand, a small amount of iron filings will stick to the outer end of the hard bristles 13; when the drum 8 continues to rotate, the first magnetic block 15 on the second skin 14 on each air storage cylinder 11 can have an intermittent magnetic effect with the second magnetic block 17, so that the second skin 14 can be driven by the first magnetic block 15 to repeatedly shrink, As a result, the second skin 14 can be continuously and rapidly expanded back and forth, and the hard bristles 13 on the second skin 14 can be reciprocated and shaken to shake off the iron filings remaining on the hard bristles 13; when the gas 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 gas 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, and the first magnetic block 15 drives the second skin 14 to shrink, thereby squeezing the gas in the gas storage cylinder 11, so that the first skin 12 expands, and the second magnetic block 17 on the fixed cylinder 16 is aligned. A skin 12 expands outward, causing the first skin 12 to expand in an arc shape as a whole, thereby causing the hard bristles 13 to expand outward. The outward-expanded hard bristles 13 will be inserted 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 offset. At this time, the first skin 12 contracts, thereby driving the hard bristles 13 to retract. During the process of retracting the hard bristles 13, iron filings on the hard bristles 13 will be intercepted by the flexible blanket 18. In this way, when the brushing mechanism is brushing the tool, the hard bristles 13 can always be kept clean, thereby obtaining a better tool cleaning effect.

[0025] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-spindle compound machine tool for convenient tool change, comprising a machine tool body (22), characterized in that: A plurality of spindles (23) are installed in the machine tool body (22), and a tool magazine (24) is correspondingly arranged on one side of each spindle (23). The tool magazine (24) is fixed on the machine tool body (22), and a tool changing manipulator (25) is installed between the tool magazine (24) and the spindle (23). A vertical shaft (4) is correspondingly arranged below the tool claw (2) at any end of the tool changing arm (1) of the tool changing manipulator (25), and the vertical shaft (4) is rotatably connected to a support frame (3), and the support frame (3) is fixed on the tool changing arm (1). The vertical shaft (4) is transmission-connected to a driving motor (6), and a turntable (5) is coaxially fixed to the top end of the vertical shaft (4), and a brushing mechanism and a flushing mechanism are arranged at intervals along the circumferential direction on the turntable (5).

2. The multi-spindle compound machine tool with convenient tool change according to claim 1, characterized in that: The scrubbing mechanism comprises a rotating drum (8), the outer surface of the rotating drum (8) is provided with mounting grooves extending in the circumferential direction, an air storage cylinder (11) is fixedly installed in each of the mounting grooves, the outer end of the air storage cylinder (11) is covered and fixed with a first skin (12), the inner end of the air storage cylinder (11) is covered and fixed with a second skin (14), the first skin (12) and the second skin (14) seal the two ends of the air storage cylinder (11), a plurality of hard bristles (13) are fixed on the outer surface of the first skin (12), and a plurality of hard brushes (13) are fixed on the second skin (14). A plurality of first magnetic blocks (15) are provided, the bottom end of the rotating cylinder (8) is coaxially rotatably connected to a rotating shaft (9), the rotating shaft (9) is rotatably connected to the rotating disk (5), the rotating shaft (9) is transmission-connected to a rotating motor (10), a fixed cylinder (16) is coaxially inserted in the rotating cylinder (8), the fixed cylinder (16) is fixed to the rotating disk (5), a plurality of second magnetic blocks (17) are fixed to the fixed cylinder (16) at intervals along the circumferential direction on a side away from the central axis of the rotating shaft (9), and 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): in a first working state, the first magnetic block (15) corresponds to the second magnetic block (17), at which time the first magnetic block (15) is subjected to the repulsive force of the second magnetic block (17), and the first magnetic block (15) drives the second skin (14) to retract, thereby squeezing the gas in the gas storage cylinder (11), so that the first skin (12) expands; in a second working state, the first magnetic block (15) is staggered with the second magnetic block (17), at which time the first magnetic block (15) does not move, so that the first skin (12) and the second skin (14) are both in a flat state.

3. The multi-spindle compound machine tool with convenient tool change according to claim 2, characterized in that: The first covering skin (12) and the second covering skin (14) are both made of high-elasticity rubber.

4. The multi-spindle compound machine tool with convenient tool change according to claim 2, characterized in that: The first magnetic block (15) and the second magnetic block (17) are both in the shape of long strips.

5. The multi-spindle compound machine tool with convenient tool change according to claim 2, characterized in that: A flexible blanket (18) is arranged correspondingly on the outer side of the rotating drum (8), and the flexible blanket (18) is arranged correspondingly to the rotating drum (8). One end of the flexible blanket (18) is wound and fixed on a reel (19), and the other end of the flexible blanket (18) is wound and fixed on a discharge shaft (21). The reel (19) and the discharge shaft (21) are both arranged parallel to the rotating drum (8). The bottom ends of the reel (19) and the discharge shaft (21) are both rotatably connected to the rotating disk (5), and the reel (19) is transmission-connected to a reeling motor (20); Any one of the second magnetic blocks (17) is arranged corresponding to the flexible blanket (18).

6. The multi-spindle compound machine tool with convenient tool change according to claim 5, characterized in that: The flexible blanket (18) is made of sponge material.

7. The multi-spindle compound machine tool with convenient tool change according to claim 2, characterized in that: The cross section of the gas storage cylinder (11) is rectangular.

8. The multi-spindle compound machine tool with convenient tool change according to claim 1, characterized in that: The flushing mechanism comprises a flushing pipe (7), the flushing pipe (7) being arranged parallel to the vertical axis (4), a plurality of spray holes being provided on the flushing pipe (7) along its length direction on one side facing the vertical axis (4), the flushing pipe (7) being fixed on the rotating disk (5), and the flushing pipe (7) being used to connect to a cleaning liquid supply device.

Images