Numerically-controlled lathe with double-spindle butt-joint gang tool structure

Abstract

The invention relates to the technical field of double-spindle lathes, in particular to a double-spindle butt joint gang tool structure numerical control lathe which comprises a water bag filled in a sinking cavity, the end of the water bag extends to a tool rest, the tool rest is located above the sinking cavity, and a flushing mechanism further comprises a water outlet pipe connected to the water bag and a water inlet formed in the water bag. The flushing mechanism further comprises bolts which are installed on the tool rest and used for locking the tools in the tool position grooves and pressurizing cavities formed in part of the bolts, and each pressurizing cavity is connected with a first flushing pipe connected with the water outlet pipe. The bottom end of the bolt provided with the pressurizing cavity is further provided with a water spraying hole communicated with the first flushing pipe, water is sprayed outwards through the water spraying hole after being collected through the pressurizing cavity, the water is sprayed to the cutter, and scrap iron impurities left on the cutter or the cutter position groove in the machining process are flushed downwards.

Description

Technical Field

[0001] The invention relates to the technical field of double-spindle lathes, in particular to a CNC lathe with a double-spindle butt-jointed tool arrangement structure. Background Art

[0002] The working principle of a dual-spindle CNC lathe is the same as that of a single-spindle CNC lathe. The difference is that a dual-spindle CNC lathe has two spindles, and a chuck is fixed on each of the two spindles. When processing both ends of a workpiece, one spindle chuck first carries the workpiece to complete the processing, and then this spindle chuck transfers the workpiece to the other spindle chuck to complete the processing of the other end. This shows that a dual-spindle CNC lathe saves time on tool setting and repeated clamping of workpieces when processing shaft parts, thereby improving work efficiency.

[0003] The dual spindles are symmetrically arranged on both sides of the tool holder. The tool holder with the tool can move relative to the dual spindle chucks. A large amount of iron filings will be left on the tool holder and the tool during machining. The traditional manual cleaning method has safety hazards. When the workpiece is handed over from the upper spindle chuck to the lower spindle chuck for clamping, the upper processing end of the workpiece needs to be clamped on the lower spindle chuck as the clamping end. Since there may be debris left on the upper processing end of the workpiece, the workpiece will experience circular runout after being clamped and processed on the lower spindle chuck through this end, affecting the machining accuracy. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a dual-spindle butt-jointed tool arrangement structure CNC lathe, comprising a bed, a first spindle seat and a second spindle seat arranged on the bed, a tool holder arranged on the bed and located between the first spindle seat and the second spindle seat, and a flushing mechanism arranged between the first spindle seat and the second spindle seat and the tool holder respectively;

[0005] A tool position slot is provided on the tool holder, a sink cavity is provided downward from the top surface of the bed body, a flushing mechanism includes a water bag filled in the sink cavity, the end of the water bag extends to the tool holder, the tool holder is located above the sink cavity, the flushing mechanism also includes a water outlet pipe connected to the water bag, the flushing mechanism also includes a water inlet provided on the water bag, the flushing mechanism also includes a bolt installed on the tool holder and used to lock the tool in the tool position slot, the flushing mechanism also includes a booster cavity provided on some of the bolts, each booster cavity is connected to a first flushing pipe connected to the water outlet pipe, and the bottom end of the bolt provided with the booster cavity is also provided with a water spray hole communicated with the first flushing pipe;

[0006] The flushing mechanism also includes a push plate connected to the bottom of the first spindle seat and the bottom of the second spindle seat. The two push plates are slidably fitted in the sink cavity. The two push plates are respectively connected to the outer ends of the water bags on both sides. When the first spindle seat and the second spindle seat move relative to each other, the water bags are compressed and shortened by the two push plates. When the first spindle seat and the second spindle seat move in opposite directions, the water bags are stretched and lengthened by the two push plates.

[0007] As a further preferred embodiment, the first spindle seat and the second spindle seat are installed on the bed by means of slide rails and screws, and driven by the screws, can move along the slide rails on the bed in the X and Z directions, so that the automatic chucks on the first spindle seat and the second spindle seat can carry the workpiece to complete feeding or withdrawing relative to the tool on the tool holder.

[0008] As a further preferred embodiment, a water collection space is left between the outer wall of the water bag and the inner wall of the sinking cavity, and an aisle is left between the bottom surfaces of the first spindle seat and the second spindle seat and the top surface of the water bag. There are at least two water outlet pipes, and the two water outlet pipes are respectively connected to the two outer ends of the water bag, and the other ends of the two water outlet pipes pass inward along the aisle to the top of the tool holder and are connected to the top end of the bolt with a boosting chamber.

[0009] As a further preferred embodiment, there are two water bags, and the opposite ends of the two water bags extend to the middle of the sink cavity. A metal tube is fixed in the middle of the sink cavity. The water inlet is opened on the metal tube. The outer side of the water inlet is communicated with the sink cavity. The opposite ends of the two water bags are respectively inserted into the metal tube from the two ends of the metal tube, and the other ends of the two water bags are respectively connected to the bottom surfaces of the first spindle seat and the second spindle seat through push plates. The water inlet is close to the bottom of the metal tube. The two water bags are corrugated structures, and the two opposite ends of the water bags are slidably fitted in the tube cavity of the metal tube.

[0010] As a further preferred embodiment, closing plates are installed at opposite ends of the two water bags, drainage holes are opened on the closing plates, and the two closing plates are separated from each other and fixed in the metal tube in a bilaterally symmetrical manner.

[0011] As a further preference, the tool holder is a rectangular structure, and the bolts with the pressurized chamber are located at the corners of the tool holder.

[0012] As a further preferred embodiment, the bottom end of the bolt with the boost chamber is provided with an oblique opening, and the bottom end of the water spray hole is communicated with the oblique opening.

[0013] As a further preferred embodiment, there are two water outlet pipes, which are respectively connected to the two water bags, and the flushing mechanism also includes a plurality of second washing pipes connected to the two water outlet pipes, the water outlet ends of the second washing pipes are connected to the outer walls of the first spindle seat and the second spindle seat, the water outlet direction of the second washing pipe on the first spindle seat is toward the chuck on the second spindle seat, and the water outlet direction of the second washing pipe on the second spindle seat is toward the chuck of the first spindle seat.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. During machining, the first spindle seat or the second spindle seat will move the workpiece relative to the tool holder. At the same time, the push plate at the bottom will be used to compress and shorten the water bag on the same side. The compression and shortening of the water bag will generate water pressure, causing the water in the water bag to enter the water outlet pipe, and then sprayed onto the connected bolts through the first flushing pipe. After the water is collected in the booster chamber, it is sprayed out through the water spray hole and sprayed onto the tool, flushing down the iron filings and impurities remaining on the tool or tool slot during machining.

[0016] 2. The water spray hole is directly opened on the bolt, and the existing function of the bolt is to fix the turning tool in the tool slot, and a booster chamber is opened in part of the bolt, and a water spray hole communicating with the booster chamber is opened at the bottom end of this part of the bolt. This part of the bolt is used to connect the first flushing pipe as a connecting tool for flushing the tool and the tool slot. Since the booster chamber and the water spray hole are opened on the bolt, and the bottom end of the bolt directly presses on the turning tool, when water is discharged, the water can be directly drained from this part of the bolt and impact the turning tool, the flushing position is accurately positioned, and the cleaning efficiency is improved.

[0017] 3. When the bolt locks the turning tool in the tool slot, its bottom end is close to the cutter head, and a water spray hole is opened at the bottom end of the bolt, and an oblique opening facing the cutter head is opened along the water spray hole. When the water outlet pipe pours water into the booster chamber of the bolt, it will be sprayed outward through the water spray hole and just sprayed onto the cutter head along the tool surface, so that the flushing effect of the turning tool is better. When cleaning the tool slot, the rotation of the bolt is used. By turning the bolt, the water spray hole and the oblique opening can be adjusted to the end of the tool slot. The end of the tool slot is used as the starting point for flushing, and the iron filings and impurities in the tool slot are flushed outward. Connecting the water outlet pipe to the bolt 10 just makes use of the rotation of the bolt, so that when the bolt locks the turning tool, it not only reflects the locking function, but also reflects the use of its rotation to adjust the flushing angle when the turning tool is not locked.

[0018] 4. By setting up another two water pipes, a cleaning function is also set on the chuck to ensure that when the workpiece is transferred to the next chuck group, there is no iron filings left on the surface of the processed end as the clamping end, and there is no iron filings left in the next chuck. After the workpiece is transferred to the next chuck group for clamping, jumping is avoided, and the processing accuracy is guaranteed when the unprocessed end of the workpiece is processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a CNC lathe with a dual-spindle butt-jointed tool arrangement structure under a three-dimensional perspective provided by an embodiment of the present invention;

[0020] Figure 2 A dual-spindle butt-joint tool arrangement CNC lathe provided in the embodiment of the present invention comprises Figure 1 The enlarged schematic diagram of the A part is shown, in which the first flushing pipe on the bolt is removed;

[0021] Figure 3A schematic diagram of the installation positions of the first spindle seat and the bottom push plates of the second spindle seat when a CNC lathe with a double-spindle butt-jointed tool arrangement structure provided by an embodiment of the present invention is cut open;

[0022] Figure 4 A schematic top view of a CNC lathe with a dual-spindle butt-jointed tool arrangement structure provided by an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of a local structure of a CNC lathe with a dual-spindle butt-jointed tool arrangement structure provided by an embodiment of the present invention from a rear side perspective;

[0024] Figure 6 A dual-spindle butt-joint tool arrangement CNC lathe provided in the embodiment of the present invention comprises Figure 5 A schematic diagram of the lead-out metal pipe being removed from between the two water bags, and a schematic diagram of the water outlet pipe being pulled out from the aisle at the bottom of the large pallet;

[0025] Figure 7 A dual-spindle butt-joint tool arrangement CNC lathe provided in the embodiment of the present invention comprises Figure 6 An enlarged schematic diagram of part B is shown.

[0026] In the figure: 1. bed; 2. first spindle seat; 3. second spindle seat; 4. tool holder; 41. tool position slot; 6. sink cavity; 7. water bag; 71. metal pipe; 72. closing plate; 73. drainage hole; 8. water outlet pipe; 9. water inlet; 10. bolt; 11. booster chamber; 111. first flushing pipe; 12. water spray hole; 13. push plate; 14. water collection space; 15. aisle; 16. oblique mouth; 112. second flushing pipe. DETAILED DESCRIPTION

[0027] The above and other embodiments and advantages of the present invention are described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments.

[0028] In one embodiment, Figure 1-Figure 7 As shown: A dual-spindle butt-jointed tool arrangement structure CNC lathe provided in this embodiment comprises a bed 1, a first spindle seat 2 and a second spindle seat 3 arranged on the bed 1, a tool holder 4 arranged on the bed 1 and located between the first spindle seat 2 and the second spindle seat 3, and a flushing mechanism arranged between the first spindle seat 2 and the second spindle seat 3 and the tool holder 4 respectively;

[0029] A tool position slot 41 is provided on the tool holder 4, a sink cavity 6 is provided downward from the top surface of the bed body 1, a flushing mechanism includes a water bag 7 filled in the sink cavity 6, the end of the water bag 7 extends to the tool holder 4, and the tool holder 4 is located above the sink cavity 6, the flushing mechanism also includes a water outlet pipe 8 connected to the water bag 7, the flushing mechanism also includes a water inlet 9 provided on the water bag 7, the flushing mechanism also includes a bolt 10 installed on the tool holder 4 and used to lock the tool in the tool position slot 41, the flushing mechanism also includes a booster cavity 11 provided on some of the bolts 10, each booster cavity 11 is connected to a first flushing pipe 111 connected to the water outlet pipe 8 through an adapter, and the bottom end of the bolt 10 provided with the booster cavity 11 is also provided with a water spray hole 12 communicated with the first flushing pipe 111;

[0030] The flushing mechanism also includes a push plate 13 connected to the bottom of the first spindle seat 2 and the bottom of the second spindle seat 3. The two push plates 13 are slidably fitted in the sink cavity 6. The two push plates 13 are respectively connected to the outer ends of the water bags 7 on both sides. When the first spindle seat 2 and the second spindle seat 3 move relative to each other, the water bag 7 is compressed and shortened by the two push plates 13. When the first spindle seat 2 and the second spindle seat 3 move in opposite directions, the water bag 7 is stretched and lengthened by the two push plates 13.

[0031] When in use, the shaft workpiece is first clamped on the chuck of the first spindle seat 2 or the second spindle seat 3 as the first processing end of the workpiece to be processed, and the workpiece is brought to the vicinity of the tool holder 4 through the first spindle seat 2 and processed by the tool. The first processing end is processed. In addition to being discharged to the outside through the discharge structure on the bed 1, it is inevitable that some iron filings generated during the machining process will be stagnant in the tool slot 41, which will affect the processing progress during the subsequent tool replacement and machining. The traditional cleaning method is to clean it manually with a brush, but there are safety hazards. This invention In the embodiment, when performing the above-mentioned machining, the first spindle seat 2 or the second spindle seat will move with the workpiece relative to the tool holder 4, and at the same time, the push plate 13 at the bottom will be used to compress and shorten the water bag 7 on the same side. The compression and shortening of the water bag 7 generates water pressure, so that the water in the water bag 7 enters the water outlet pipe 8, and then is sprayed onto the connected bolt 10 through the first flushing pipe 111. The water is collected by the boosting chamber 11 and then sprayed outwardly through the water spray hole 12 and sprayed onto the tool, thereby flushing downward the iron filings and impurities remaining on the tool or the tool slot 41 during machining.

[0032] In this embodiment, since the water spray hole 12 is directly formed on the bolt 10, and the existing function of the bolt 10 is to fix the turning tool (tool) in the tool slot 41, a boost chamber 11 is formed in part of the bolt 10, and a water spray hole 12 communicating with the boost chamber 11 is formed at the bottom end of this part of the bolt 10, and this part of the bolt 10 is connected to the first flushing pipe 111 as a connecting tool for flushing the tool and the tool slot. Since the boost chamber 11 and the water spray hole 12 are formed on the bolt 10, and the bottom end of the bolt 10 directly presses against the turning tool, when water is discharged, the water can be directly drained from this part of the bolt 10 and impact the turning tool, and the flushing position is accurately positioned, thereby improving the cleaning efficiency.

[0033] In this embodiment, if Figure 1 , Figure 2 As shown, the tool holder 4 is a rectangular structure, and the bolts 10 with a pressurizing chamber 11 are located at the corners of the tool holder 4. When these bolts 10 lock the turning tool in the tool slot 41, according to the conventional use of the turning tool, its tool head is close to the front, and the part involved in machining is only the tool head. Therefore, when cleaning the turning tool, it is only necessary to rinse the tool head. Therefore, no matter which tool slot 41 of the tool holder 4 is equipped with a turning tool, when the bolt 10 locks the turning tool in the tool slot 41, its bottom end is close to the tool head, and a water spray hole 12 is opened at the bottom end of the bolt 10, and an oblique opening 16 facing the tool head is opened along the water spray hole 12. When the water outlet pipe 8 pours water into the pressurizing chamber 11 of the bolt 10, it will be sprayed outward through the water spray hole 12, just spraying onto the tool head along the tool surface, and the flushing effect of the turning tool is better. When cleaning the tool slot 41 (the tool slot without a turning tool installed, because the tool slot 41 without a turning tool clamped is usually vacant during machining), the rotatability of the bolt 10 is utilized. By turning the bolt 10, the water spray hole 12 and the bevel 16 can be adjusted to the end of the tool slot 41, and the end of the tool slot 41 is used as the starting point for flushing to flush out the iron filings and impurities in the tool slot 41. Connecting the water outlet pipe 8 to the bolt 10 just utilizes the rotatability of the bolt 10, so that the bolt 10 not only reflects the locking function when locking the turning tool, but also reflects the use of its rotatability to adjust the flushing angle when the turning tool is not locked.

[0034] In the present embodiment, the squeezing and drainage action of the water bag 7 is completed by the push plate 13 when the first spindle seat 2 or the second spindle seat 3 moves toward the tool holder 4, which serves as a power component for squeezing the water bag 7 and allowing the water in the water bag 7 to enter the water outlet pipe 8. As the machining work proceeds, the tool slot 41 and the tool in the tool slot 41 are flushed. The flushing method does not require manual wiping and is safe to operate. When replacing other types of turning tools in the subsequent processing process, the turning tool will not affect the clamping balance due to residual iron chips, thereby ensuring the outer circle accuracy of the workpiece after machining.

[0035] In this embodiment, a sink cavity 6 is opened on the bed 1 (in the left and right directions in the figure), and a water bag 7 is arranged in the sink cavity 6. First, the sink cavity 6 is used to limit the water bag 7 so that the water bag 7 moves smoothly during the squeezing and stretching actions of the first spindle seat 2 or the second spindle seat 3. Second, the opening of the sink cavity 6 faces upward. The CNC lathe will be equipped with a coolant discharge system. When the turning tool on the tool holder 4 cuts the workpiece excess, the cooling pipe will move with the chuck, and the circulating pump will send the coolant into the cooling pipe during the movement, and then the cooling pipe will also spray it onto the turning tool or the workpiece to cool down the heat generated during the machining process. This cooling technology is a commonly used cooling technology in machining, and it is omitted in the drawings of the present invention. In addition to part of the coolant flowing into the coolant storage box through the drainage channel on the bed 1, some of the coolant will flow onto the bed 1, and after being collected by the sink cavity 6 on the bed 1, it will be gathered into the water bag 7 through the water inlet 9. That is to say, the opening of the sink cavity 6 is to collect the collected coolant into the water bag 7 as a flushing liquid, and then be compressed and discharged by the water bag 7 and used to flush the iron filings residues in the tool slot 41 and the iron filings residues on the tool in the tool slot 41 through the water outlet pipe 8. This coolant will also flow into the sink cavity 6 again and be gathered into the water bag 7 for recycling. The source of the liquid in the water bag 7 does not require additional water supply systems. It only needs to reasonably use the original coolant on the machine tool to reduce the assembly cost of the equipment.

[0036] like Figure 5 As shown, a water collecting space 14 is left between the outer wall of the water bag 7 and the inner wall of the sink cavity 6 , and the water collecting space 14 collects the cooling liquid from the bed 1 in the sink cavity 6 , so that water storage conditions are formed outside the water bag 7 .

[0037] like Figure 1 , Figure 4 as well as Figure 5 As shown, there is a passage 15 between the bottom surface of the first spindle seat 2 and the second spindle seat 3 and the top surface of the water bag 7, and there are at least two water outlet pipes 8, which are respectively connected to the two outer ends of the water bag 7, and the other ends of the two water outlet pipes 8 pass inward along the passage 15 to the top of the tool holder 4, and are connected to the top end of the bolt 10 with a boost chamber 11. Since the two water outlet pipes 8 pass through the passage 15, when the first spindle seat 2 and the second spindle seat 3 move forward and backward driven by the bottom large support plate according to processing needs (for example, after the workpiece is processed, the workpiece needs to be removed from the chuck at the front side of the bed 1, or the workpiece needs to be transferred from one chuck to another chuck at the front side of the bed 1), the existence of the water outlet pipes 8 affects the normal movement.

[0038] like Figures 4 to 7As shown, there are two water bags 7, and the opposite ends of the two water bags 7 extend to the middle of the sink cavity 6. A metal tube 71 is fixed in the middle of the sink cavity 6. The water inlet 9 is opened on the metal tube 71. The outer side of the water inlet 9 is connected to the sink cavity 6. The opposite ends of the two water bags 7 are inserted into the metal tube 71 by the two ends of the metal tube 71 respectively. Closing plates 72 are installed at the opposite ends of the two water bags 7. Drainage holes 73 are opened on the closing plates 72. The two closing plates 72 are separated from each other and fixed in the metal tube 71 in a left-right symmetrical manner. The other ends of the two water bags 7 are respectively connected to the bottom surfaces of the first spindle seat 2 and the second spindle seat 3 through the push plate 13. The water inlet 9 is close to the bottom of the metal tube 71. The two water bags 7 are corrugated structures. The two opposite ends of the water bags 7 are slidably fitted in the metal tube 71. When the first spindle seat 2 or the second spindle seat 3 in the tube cavity moves left and right, the push plate 13 is used to drive the water bag 7 to compress or stretch. For example, when the water bag 7 on the left is compressed, a compression limit is formed by the closing plate 72 at its inner end, forcing the water bag 7 to compress effectively, so as to ensure that the water bag 7 discharges the liquid into the water outlet pipe 8 through the compression effect. When the water bag 7 is compressed, the metal tube 71 will not be compressed because it is made of metal material. Similarly, when the water bag 7 is stretched, the metal tube 71 will not be stretched. In this way, the coolant received in the sink cavity 6 can be collected into the metal tube 71 through the water inlet 9 at all times. As the water bag 7 stretches again, a negative pressure is formed in the metal tube 71, and the coolant is sucked into the metal tube 71 and the water bag 7 through the water inlet 9 and the drainage hole 73 respectively by the negative pressure effect.

[0039] In another embodiment, there are two water outlet pipes 8 (the definition of these two means that, on the basis of the two water outlet pipes 8 in the above embodiment, two connecting water outlet pipes 8 are provided), and these two water outlet pipes 8 are also respectively connected to the two water bags 7, or are directly connected to the two water outlet pipes 8 in the previous embodiment in the water way of branch water pipes. The flushing mechanism also includes a second washing pipe 112 connected to the two water outlet pipes 8, and the water outlet end of the second washing pipe 112 is connected to the outer wall of the first spindle seat 2 and the second spindle seat 3. The water outlet direction of the second washing pipe 112 on the first spindle seat 2 is toward the chuck on the second spindle seat 3, and the water outlet direction of the second washing pipe 112 on the second spindle seat 3 is toward the chuck of the first spindle seat 2. As is known to all, the biggest feature of the dual-spindle lathe is that two chuck groups (chucks on the first spindle seat 2 and the second spindle seat 3 in the present invention) are installed. When the shaft workpiece is clamped on a chuck group (for example, the chuck on the first spindle seat 2 in the present invention) and one shaft end is processed, the processed shaft end of the workpiece is clamped by another chuck group (for example, the chuck on the second spindle seat 3 in the present invention), and then the other unprocessed end is brought to the vicinity of the turning tool to complete the processing. Before the latter chuck group clamps the previous processed end of the workpiece, the water bag 7 is used by the former chuck group to complete the compression and drainage action, and the liquid discharged through the second washing pipe 112 at the same side end is just for the iron filings remaining in the chuck of the latter chuck group in advance. After flushing, the next chuck group brings the water bag 7 on the other side to complete the compression and drainage action. The liquid discharged through the second washing pipe 112 on the same side end just flushes the iron filings remaining on the processing end of the workpiece in the previous chuck group in advance. After flushing, the next chuck group automatically transfers the workpiece from the previous chuck group and automatically clamps it (the dual-spindle docking CNC lathe itself has automatic docking technology, and its specific principle is a mature existing technology and will not be repeated here), thereby ensuring that when the workpiece is transferred to the next chuck group, there is no iron filings remaining on the surface when its processing end is used as the clamping end, and there is no iron filings remaining in the next chuck. After the workpiece is transferred to the next chuck group and clamped, jumping is avoided, and the processing accuracy is guaranteed when the unprocessed end of the workpiece is processed.

[0040] The first spindle seat 2 and the second spindle seat 3 are installed on the bed 1 through slide rails and screws, and driven by the screws, they can move on the bed 1 along the slide rails in the X and Z directions, so that the automatic chucks on the first spindle seat 2 and the second spindle seat 3 carry the workpiece relative to the tool on the tool holder 4 to complete feeding or unloading.

[0041] The movement of the first spindle seat 2 or the second spindle seat 3 toward the tool holder 4 mentioned in the present invention refers to the left and right movement as shown in the figure. At this time, the first spindle seat 2 or the second spindle seat 3 is completed by the bottom large support plate, and the push plate 13 is fixed on the bottom surface of the large support plate. When the first spindle seat 2 or the second spindle seat 3 moves back and forth, it only moves back and forth along the large support plate through the small support plate on the top. This transmission technology is existing technology and will not be repeated here.

[0042] The above orientation designations do not represent the specific orientations of the components in this implementation scheme. This implementation scheme is only for the convenience of describing the scheme, and the orientations are described relatively with reference to the figures. In essence, the specific orientations of the components are described according to their actual installation and actual use as well as the customary orientations of technicians in this field. This is hereby explained.

[0043] The specific implementation methods described above further describe the invention purpose, technical solutions, and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A CNC lathe with a double-spindle butt-jointed tool arrangement structure, characterized in that: The invention comprises a bed (1), a first spindle seat (2) and a second spindle seat (3) arranged on the bed (1), a tool holder (4) arranged on the bed (1) and located between the first spindle seat (2) and the second spindle seat (3), and a flushing mechanism arranged between the first spindle seat (2) and the second spindle seat (3) and the tool holder (4); a tool position slot (41) is provided on the tool holder (4), a sink cavity (6) is provided downward from the top surface of the bed (1), the flushing mechanism comprises a water bag (7) filled in the sink cavity (6), the end of the water bag (7) extends to the tool holder (4), the tool holder (4) is located above the sink cavity (6), the flushing mechanism also comprises a water outlet pipe (8) connected to the water bag (7), the flushing mechanism also comprises a water inlet (9) provided on the water bag (7), and the flushing mechanism also comprises a tool holder (4) installed on the tool holder (4) and used to lock the tool in the tool position slot (41). The flushing mechanism further comprises a boosting chamber (11) provided on some of the bolts (10), each boosting chamber (11) being connected to a first flushing pipe (111) connected to a water outlet pipe (8), and a water spray hole (12) communicating with the first flushing pipe (111) being provided at the bottom end of the bolt (10) provided with the boosting chamber (11); the flushing mechanism further comprises a push plate (13) connected to the bottom of the first spindle seat (2) and the bottom of the second spindle seat (3), the two push plates (13) both being slidably fitted in the sinking chamber (6), the two push plates (13) being respectively connected to the outer ends of the water bags (7) on both sides, and when the first spindle seat (2) and the second spindle seat (3) move relative to each other, the water bags (7) are compressed and shortened by the two push plates (13), and when the first spindle seat (2) and the second spindle seat (3) move in opposite directions, the water bags (7) are stretched and lengthened by the two push plates (13).

2. The double-spindle butt-jointed tool structure CNC lathe according to claim 1, characterized in that: The first spindle seat (2) and the second spindle seat (3) are mounted on the bed (1) via slide rails and screws, and driven by the screws, can move along the slide rails on the bed (1) in the X direction and the Z direction, so that the automatic chucks on the first spindle seat (2) and the second spindle seat (3) carry the workpiece relative to the tool on the tool holder (4) to complete feeding or unloading.

3. A CNC lathe with a double spindle butt-jointed tool arrangement structure according to claim 2, characterized in that: A water collecting space (14) is reserved between the outer wall of the water bag (7) and the inner wall of the sink cavity (6); a passage (15) is reserved between the bottom surface of the first spindle seat (2) and the second spindle seat (3) and the top surface of the water bag (7); there are at least two water outlet pipes (8), and the two water outlet pipes (8) are respectively connected to the two outer ends of the water bag (7); the other ends of the two water outlet pipes (8) pass inward along the passage (15) to the top of the tool holder (4), and are connected to the top end of the bolt (10) having a pressurized chamber (11).

4. The double-spindle butt-jointed tool arrangement CNC lathe according to claim 3, characterized in that: There are two water bags (7), and the opposite ends of the two water bags (7) extend to the middle of the sink cavity (6). A metal tube (71) is fixed to the middle of the sink cavity (6). The water inlet (9) is opened on the metal tube (71). The outer side of the water inlet (9) is connected to the sink cavity (6). The opposite ends of the two water bags (7) are respectively inserted into the metal tube (71) from the two ends of the metal tube (71). The other ends of the two water bags (7) are respectively connected to the bottom surface of the first spindle seat (2) and the second spindle seat (3) through a push plate (13). The water inlet (9) is close to the bottom of the metal tube (71). The two water bags (7) are of corrugated structure. The two opposite ends of the water bags (7) are slidably fitted in the tube cavity of the metal tube (71).

5. The double-spindle butt-jointed tool arrangement CNC lathe according to claim 4, characterized in that: A closing plate (72) is installed at the opposite ends of the two water bags 7, and a drainage hole (73) is opened on the closing plate (72). The two closing plates (72) are separated from each other in the metal tube (71), and the two closing plates (72) are fixed in the metal tube 71.

6. The CNC lathe with a double-spindle butt-jointed tool arrangement structure according to claim 5, characterized in that: The tool holder (4) is a rectangular structure, and a bolt (10) with a pressure chamber (11) is located at a corner of the tool holder (4).

7. The double-spindle butt-jointed tool arrangement CNC lathe according to claim 6, characterized in that: The bottom end of the bolt (10) with the boost chamber (11) is provided with an oblique opening (16), and the bottom end of the water spray hole (12) is communicated with the oblique opening (16).

8. The double-spindle butt-jointed tool arrangement CNC lathe according to claim 7, characterized in that: There are two water outlet pipes (8), and the two water outlet pipes (8) are respectively connected to the two water bags (7). The flushing mechanism also includes a plurality of second washing pipes (112) connected to the two water outlet pipes (8). The water outlet ends of the second washing pipes (112) are connected to the outer walls of the first spindle seat (2) and the second spindle seat (3). The water outlet direction of the second washing pipe (112) on the first spindle seat (2) is toward the chuck on the second spindle seat (3), and the water outlet direction of the second washing pipe (112) on the second spindle seat (3) is toward the chuck of the first spindle seat (2).

Images