Parallel double-spindle lathe

Abstract

The invention discloses a parallel double-spindle lathe, and belongs to the technical field of machining machine tools. Comprising a machine tool base and further comprises two spindles installed on the machine tool base, clamping chucks arranged on the shaft end sides of the spindles and in power connection with the spindles, and tool rest installation bases arranged on the sides, away from the spindles, of the clamping chucks and located on the sides, away from each other, of the clamping chucks correspondingly. Two materials can be processed at the same time, the processing efficiency can be improved, after the materials are processed, the materials can be placed between a mounting block and an auxiliary inclined face to be stored, covering cloth can be pulled out of a containing cavity and wound to the surfaces of the processed materials, and the materials are temporarily stored after being wrapped; and the situation that cutting chips fly to the surfaces of materials to damage the surfaces of the materials in the follow-up machining process is avoided, and the protection capacity of the machined materials is improved.

Description

Technical Field

[0001] The present invention relates to a parallel double-spindle lathe, belonging to the technical field of machining machine tools. Background Art

[0002] A parallel double-spindle lathe is an advanced numerical control machine tool that integrates two spindles and two working areas. It can machine different parts at the same time or machine different parts of a large part on two spindles simultaneously. This design significantly improves production efficiency and reduces machining time and costs. Such equipment is very suitable for batch production and application scenarios that require high automation, flexibility, and high-precision machining, such as the fields of automobile manufacturing and aerospace component machining.

[0003] After machining a workpiece on a conventional double-spindle lathe, it is necessary to transfer and store the part, which will waste some time on material transfer. If in order to improve the machining efficiency of the lathe and reduce the number of material transfer times, the machined parts of the same batch are temporarily placed inside the lathe, it may occur that cutting chips fly onto the surface of the workpiece and damage the surface of the workpiece. Therefore, there are certain problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a parallel double-spindle lathe, which solves the problem that when parts are temporarily placed inside the lathe in the prior art, cutting chips may fly onto the surface of the workpiece and damage the surface of the workpiece.

[0005] The technical problem to be solved by the present invention is achieved by the following technical solutions: A parallel double-spindle lathe includes a machine tool base, and also includes Spindles, two are arranged in parallel, Clamping chucks, arranged on the shaft end side of the spindles, and the clamping chucks are power-connected to the spindles, Tool rest mounting seats, arranged on the side of the clamping chucks away from the spindles, the tool rest mounting seats are respectively located on the mutually remote sides of the clamping chucks, and a tool rest and a tool are also arranged on the tool rest mounting seats, Waste collection grooves, opened between the two tool rest mounting seats, and auxiliary inclined surfaces are arranged on both sides of the opening of the waste collection grooves facing the tool rest mounting seats, Mounting blocks, arranged at the connection of the auxiliary inclined surfaces and the waste collection grooves and fixedly connected to the machine tool base, and accommodation cavities are opened in the mounting blocks, Accommodation cavities, with openings facing the waste collection grooves, Rotating shafts, rotatably arranged in the accommodation cavities, Covering cloths, wound around the rotating shafts, and one ends of the covering cloths extend outside the mounting blocks, Air guiding parts, arranged on the mounting blocks for exhausting air outwards, The fixture adjustment structure is arranged between the clamping chuck and the machine tool base, and is used to adjust the position of the clamping chuck. The tool adjustment structure is arranged between the tool rest mounting seat and the machine tool base, and is used to adjust the position of the tool rest. Among them, the main shaft and the clamping chuck are both arranged on the fixture adjustment structure, and several tools are fixed on the tool rest.

[0006] By adopting the above technical solutions, the material is clamped on the clamping chuck, and then the material is driven to rotate by the main shaft and the clamping chuck. The material is cut by the tool arranged on the tool rest mounting seat to achieve the purpose of cutting processing. At the same time, by setting two main shafts and two tool rest mounting seats, two materials can be processed simultaneously, which is beneficial to improving the processing efficiency. After the material processing is completed, the material can be placed between the mounting block and the auxiliary inclined plane for storage. And the covering cloth can be pulled out from the storage cavity and wound around the surface of the processed material to wrap the material for temporary storage, avoiding the cutting chips flying onto the surface of the material and damaging the surface of the material during the subsequent processing, which is beneficial to improving the protection ability of the processed material.

[0007] The present invention is further configured as: The fixture adjustment structure includes The fixture adjustment guide rail is fixed on the machine tool base and extends in the same axial direction as the main shaft. The fixture adjustment block is slidably arranged on the fixture adjustment guide rail. The fixture adjustment seat is fixedly connected to the fixture adjustment block. The fixture adjustment screw is rotatably arranged on the machine tool base, and the fixture adjustment screw is threadedly connected to the fixture adjustment seat. The fixture adjustment motor is fixed on the machine tool base and is power-connected to the end of the fixture adjustment screw. The gearbox is arranged between the main shaft and the clamping chuck and is fixed to the fixture adjustment seat. The gearbox is respectively power-connected to the main shaft and the clamping chuck.

[0008] The present invention is further configured as: A limiting block is arranged on one side of the fixture adjustment screw facing the machine tool base. The side surface of the fixture adjustment seat abuts against the machine tool base, and a compression spring is fixedly arranged between the limiting block and the fixture adjustment seat.

[0009] By adopting the above technical solution, when it is necessary to move the position of the clamped material, the fixture adjustment motor is started to drive the fixture adjustment screw to rotate, so that under the action of the thread structure, the fixture adjustment seat moves. Since the fixture adjustment seat is fixed to the fixture adjustment block, the fixture adjustment block slides along the extension direction of the fixture adjustment guide rail, achieving the purpose of restricting the movement path of the fixture adjustment seat, thereby improving the stability of the clamped material during movement. And during the movement of the fixture adjustment seat, the pressure spring always applies pressure to the fixture adjustment seat, so that the threaded connection between the fixture adjustment seat and the fixture adjustment screw can be tightly engaged, avoiding errors in the moving position of the material caused by threaded engagement errors, and further avoiding the expansion of processing errors. At the same time, due to the pressure of the pressure spring, the abutting pressure of the engagement surface of the threaded connection between the fixture adjustment seat and the fixture adjustment screw increases, thereby increasing the friction force. Since vibration will be generated when the spindle drives the material to rotate through the clamping chuck, the phenomenon of displacement of the fixture adjustment seat during use can be effectively avoided by increasing the friction force, further improving the processing accuracy of the material.

[0010] The present invention is further provided that: the tool adjustment structure includes A cutting base, which is inclined and fixed on the machine tool base in the direction towards the waste collection groove, A tool adjustment guide rail, which is fixedly arranged on the inclined side of the cutting base, A tool adjustment seat, which is slidably arranged on the tool adjustment guide rail, A tool adjustment screw, which is rotatably arranged on the cutting base and is threadedly connected to the tool adjustment seat, A tool adjustment motor, which is fixedly connected to the cutting base and is power-connected to the end of the tool adjustment seat.

[0011] By adopting the above technical solution, after the tool adjustment motor is started, it drives the tool adjustment screw to rotate, and then drives the tool adjustment seat to slide on the tool adjustment guide rail under the action of the thread structure, thereby driving the tool holder mounting seat and the tool holder tool to move. When it is necessary to change the tool, the tool holder mounting seat is moved away from the clamping chuck by changing the position of the tool holder mounting seat, and after changing the tool, it approaches the clamping chuck again for processing, achieving the purpose of automatic tool change.

[0012] The present invention is further provided that: the air guide part includes An air jet head, which is opened on the outer side of the mounting block and is arranged in the direction towards the clamping chuck, An air charging pipe, the end of which is communicated with the air jet head.

[0013] By adopting the above technical solution, the air charging pipe is communicated with an external air supply device, and the gas is introduced into the air jet head through the air charging pipe and discharged through the air jet head. Since the gas discharged from the air jet head is sprayed in the direction towards the clamping chuck, the cutting chips generated during processing can follow the airflow and separate from the material, avoiding the cutting chips covering the surface of the material during processing and affecting the processing of the material.

[0014] The present invention is further configured such that: one end of the covering cloth located outside the mounting block is fixedly provided with a movable clamping block, and the machine tool base is fixedly provided with a fixed clamping block on one side where two tool rest mounting seats are away from each other, and the fixed clamping block can be clamped with the movable clamping block.

[0015] By adopting the above technical solution, when the unilateral tool rest mounting seat and the clamping chuck are not in use, the covering cloth on this side is pulled out from the storage cavity, and then the covering cloth is used to cover the tool rest mounting seat on this side, so that the tool and the tool rest are both covered. Finally, the movable clamping block is clamped with the fixed clamping block. In this way, when the tool rest mounting seat and the clamping chuck on the other side are in use, it can prevent the cutting chips from splashing to the unused side, thereby reducing the maintenance difficulty of the machine tool in the later stage and being beneficial to improving the maintenance convenience of the machine tool.

[0016] The present invention is further configured such that: there is a gap between the mounting block and the machine tool base to form a material discharge cavity.

[0017] By adopting the above technical solution, if the cutting chips splash onto the auxiliary inclined surface, under the action of gravity, the cutting chips slide along the auxiliary inclined surface and enter the waste collection tank for storage through the material discharge cavity, preventing the cutting chips from being intercepted and accumulated by the mounting block and affecting the recovery of the cutting chips.

[0018] The present invention is further configured such that: the lathe further includes a manipulator structure, and the manipulator structure includes a manipulator support frame, fixedly arranged on the machine tool base, a manipulator, fixed on the manipulator support frame, and a grasping end is arranged on the manipulator, and the grasping end is located between the tool rest mounting seat and the clamping chuck.

[0019] The present invention is further configured such that: the lathe further includes a feeding structure, and the feeding structure includes a feeding base, fixedly connected to the machine tool base through a support frame, feeding rollers, several of which are arranged side by side and rotatably arranged on the feeding base, a flat plate chain, surrounding several feeding rollers and forming a sprocket structure with the feeding rollers, a feeding motor, fixed on the feeding base and power-connected to the feeding rollers.

[0020] By adopting the above technical solution, the material is placed on the flat plate chain. After the feeding motor is started, it drives the feeding rollers to rotate. Due to the sprocket structure, the material on the flat plate chain is moved to the manipulator. After the grasping end of the manipulator grabs the material, it is clamped on the clamping chuck for processing, eliminating the need for manual feeding and clamping, which is beneficial to improving the processing efficiency.

[0021] The beneficial effects of the present invention are as follows: The material is clamped on the clamping chuck, and then the spindle and the clamping chuck drive the material to rotate. The tool provided on the tool rest mounting seat cuts the material to achieve the purpose of cutting and machining. At the same time, through the arrangement of two spindles and two tool rest mounting seats, two materials can be machined simultaneously, which is beneficial to improving the machining efficiency. After the material is processed, the material can be placed between the mounting block and the auxiliary inclined surface for storage. Moreover, the covering cloth can be pulled out from the storage cavity and wound around the surface of the processed material to wrap the material for temporary storage, avoiding the cutting chips flying onto the surface of the material and damaging the surface of the material during subsequent processing, which is beneficial to improving the protection ability for the processed material. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present invention; Figure 2 is a schematic structural view of the present invention without the manipulator structure and the feeding structure; Figure 3 is a schematic structural view of the present invention when the covering cloth covers the tool rest mounting seat and vertically blocks the opening of the waste collection groove; Figure 4 is a schematic structural view of the present invention when the covering cloth covers the tool rest mounting seat and does not vertically block the opening of the waste collection groove; Figure 5 is a schematic structural view of the discharging structure of the present invention.

[0023] In the figure: 10, machine tool base; 11, waste collection groove; 12, cutting base; 13, tool adjustment guide rail; 14, tool adjustment seat; 15, tool adjustment motor; 16, tool adjustment screw; 17, tool rest mounting seat; 18, flat chain; 19, feeding motor; 20, feeding roller; 21, feeding base; 22, fixture adjustment guide rail; 23, fixture adjustment seat; 24, fixture adjustment block; 25, fixture adjustment motor; 26, fixture adjustment screw; 27, limit block; 28, pressure spring; 29, spindle; 30, gearbox; 31, clamping chuck; 32, manipulator support frame; 33, manipulator; 34, auxiliary inclined surface; 40, mounting block; 41, fixed clamping block; 42, covering cloth; 43, movable clamping block; 44, storage cavity; 45, air jet head; 46, discharging cavity; 48, charging pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to understand the technical means, creative features, achieved purposes and effects of the present invention easily, the present invention will be further described below with reference to specific drawings.

[0025] Such as Figure 1 , Figure 2 and Figure 5As shown in the figure, a parallel double-spindle lathe includes a machine tool base 10, and also includes a spindle 29 installed on the machine tool base 10. There are two spindles 29 arranged in parallel, and one end of the spindle 29 is connected to an external power source. The other end of the spindle 29 is power-connected to a gearbox 30. The gearbox 30 is used to change the output speed of the spindle 29. A clamping chuck 31 is located on the side of the gearbox 30 away from the spindle 29. The clamping chuck 31 communicates with the power output end of the gearbox 30 and is indirectly power-connected to the spindle 29. On the side of the clamping chuck 31 away from the spindle 29, there is a tool rest mounting seat 17. There are two groups of tool rest mounting seats 17, and the two groups of tool rest mounting seats 17 are respectively located on the mutually remote sides of the clamping chuck 31. A tool rest and cutting tools are also provided on the tool rest mounting seat 17. The tool rest is detachably and fixedly connected to the tool rest mounting seat 17, and several cutting tools are provided and fixed on the tool rest. A waste collection groove 11 is opened between the two tool rest mounting seats 17. Auxiliary inclined surfaces 34 are provided on both sides of the opening of the waste collection groove 11 facing the tool rest mounting seat 17. An installation block 40 is fixedly provided at the connection of the auxiliary inclined surface 34 and the waste collection groove 11. A storage cavity 44 is opened in the installation block 40. The opening of the storage cavity 44 faces the waste collection groove 11. A rotating shaft is rotatably provided in the storage cavity 44. A torsion spring is fixedly provided at the connection end of the rotating shaft and the storage cavity 44. A covering cloth 42 is wound around the rotating shaft. One end of the covering cloth 42 extends outside the installation block 40. An air guiding part is also provided on the installation block 40. The air guiding part includes a jet head 45 and an air charging pipe 48. The jet head 45 is opened on the outer side of the installation block 40 and is arranged in the direction facing the clamping chuck 31. The end of the air charging pipe 48 is communicated with the jet head 45, and the other end of the air charging pipe 48 is communicated with an external air supply device. Gas is introduced into the jet head 45 through the air charging pipe 48 and discharged through the jet head 45. Since the gas discharged from the jet head 45 is sprayed in the direction of the clamping chuck 31, the cutting chips generated during processing can follow the airflow and separate from the workpiece, avoiding the cutting chips covering the surface of the workpiece during processing and affecting the processing of the workpiece.

[0026] As Figure 2As shown in the figure, a fixture adjustment structure is provided between the clamping chuck 31 and the machine tool base 10. The fixture adjustment structure is used to adjust the position of the clamping chuck 31. The fixture adjustment structure includes a fixture adjustment guide rail 22, a fixture adjustment seat 23, a fixture adjustment block 24, a fixture adjustment motor 25, and a fixture adjustment screw 26. The fixture adjustment guide rail 22 is fixed on the machine tool base 10 and extends in the same axial direction as the main shaft 29. There are two fixture adjustment guide rails 22, which are symmetrically arranged along the radial direction of the main shaft 29. The fixture adjustment block 24 is arranged on the fixture adjustment guide rail 22 and slides along the extension direction of the fixture adjustment guide rail 22. The fixture adjustment seat 23 is fixedly arranged on the side of the fixture adjustment block 24 away from the fixture adjustment guide rail 22, and the gearbox 30 is fixedly installed on the fixture adjustment seat 23. The fixture adjustment screw 26 is rotatably arranged on the machine tool base 10. The end of the fixture adjustment screw 26 penetrates through the fixture adjustment seat 23 and is threadedly connected to the fixture adjustment seat 23. The fixture adjustment motor 25 is fixed on the machine tool base 10 and is power-connected to the end of the fixture adjustment screw 26. A limit block 27 is arranged on the side of the fixture adjustment screw 26 facing the machine tool base 10. The side of the fixture adjustment seat 23 abuts against the machine tool base 10, and a pressure spring 28 is fixedly arranged between the limit block 27 and the fixture adjustment seat 23.

[0027] As Figure 2 shown, a tool adjustment structure is provided between the tool rest mounting seat 17 and the machine tool base 10. The tool adjustment structure includes a cutting base 12, a tool adjustment guide rail 13, a tool adjustment seat 14, a tool adjustment motor 15, and a tool adjustment screw 16. The cutting base 12 is fixedly arranged on the machine tool base 10. The side of the cutting base 12 facing the waste collection tank 11 is an inclined surface, and the end of the inclined surface away from the waste collection tank 11 is higher than the end close to the waste collection tank 11. The tool adjustment guide rails 13 are fixedly arranged side by side on the inclined surface of the cutting base 12. The tool adjustment guide rails 13 extend in the direction of the waste collection tank 11. The tool adjustment seat 14 is arranged on the tool adjustment guide rail 13 and slides along the extension direction of the tool adjustment guide rail 13. The tool adjustment screw 16 is rotatably arranged on the cutting base 12. The tool adjustment screw 16 penetrates through the tool adjustment seat 14 and is threadedly connected to the tool adjustment seat 14. The tool adjustment motor 15 is fixedly arranged on the cutting base 12, and the output end of the tool adjustment motor 15 is power-connected to the end of the tool adjustment seat 14.

[0028] On one side of the machine tool base 10 where the fixture adjustment structure and the tool adjustment structure are installed, a housing is fixedly arranged. Both the tool and the clamping chuck 31 are located inside the housing.

[0029] As Figures 3 to 4As shown, at one end of the covering cloth 42 located outside the mounting block 40, a movable clamping block 43 is fixedly arranged. On one side of the machine tool base 10 where the two tool rest mounting seats 17 are far away from each other, a fixed clamping block 41 is fixedly arranged, and the fixed clamping block 41 can be clamped with the movable clamping block 43. When the unilateral tool rest mounting seat 17 and the clamping chuck 31 are not in use, by pulling out the covering cloth 42 on this side from the storage cavity 44, and then covering the tool rest mounting seat 17 on this side with the covering cloth 42, so that the tool and the tool rest are both covered, and finally the movable clamping block 43 is clamped with the fixed clamping block 41, as Figure 4 shown. In this way, when the tool rest mounting seat 17 and the clamping chuck 31 on the other side are in use, it can prevent the cutting chips from splashing to the unused side, thereby reducing the maintenance difficulty of the machine tool in the later stage and being beneficial to improving the maintenance convenience of the machine tool.

[0030] As Figure 5 shown, there is a gap between the mounting block 40 and the machine tool base 10 to form a discharge cavity 46. If the cutting chips splash onto the auxiliary inclined surface 34, under the action of gravity, the cutting chips slide along the auxiliary inclined surface 34 and enter the waste collection tank 11 for storage through the discharge cavity 46, preventing the cutting chips from being intercepted and accumulated by the mounting block 40 and affecting the recovery of the cutting chips.

[0031] As Figure 1 shown, the lathe is also provided with a manipulator structure. The manipulator structure includes a manipulator support frame 32 and a manipulator 33. The manipulator support frame 32 is fixedly arranged on the machine tool base 10 to support the manipulator 33. The manipulator 33 is fixed on the manipulator support frame 32. The manipulator 33 is a multi-degree-of-freedom manipulator. A grasping end for grasping materials is arranged on the manipulator 33, and the grasping end can move between the tool rest mounting seat 17 and the clamping chuck 31. The lathe is also provided with a feeding structure. The feeding structure includes a flat chain 18, a feeding motor 19, feeding rollers 20 and a feeding base 21. The feeding base 21 is fixedly connected with the machine tool base 10 through a support frame, and the feeding base 21 can also be fixedly connected with the housing. A plurality of feeding rollers 20 are arranged and rotatably arranged side by side on the feeding base 21. The feeding motor 19 is fixed on the feeding base 21 and is power-connected with the ends of the plurality of feeding rollers 20 through a plurality of pulley structures. The flat chain 18 is wound around the plurality of feeding rollers 20 and forms a sprocket structure with the feeding rollers 20. During the rotation of the feeding rollers 20, the flat chain 18 is driven to move. The materials are placed on the flat chain 18. After the feeding motor 19 is started, it drives the feeding rollers 20 to rotate. Due to the sprocket structure, the materials on the flat chain 18 are moved to the manipulator 33. After the grasping end of the manipulator 33 grasps the materials, they are clamped on the clamping chuck 31 for processing, eliminating the need for manual feeding and clamping, which is beneficial to improving the processing efficiency.

[0032] The workpiece is clamped on the clamping chuck 31, and then the workpiece is driven to rotate by the main shaft 29 and the clamping chuck 31. The workpiece is cut by the cutting tool arranged on the tool rest mounting seat 17 to achieve the purpose of cutting processing. At the same time, by arranging two main shafts 29 and two tool rest mounting seats 17, two workpieces can be processed simultaneously, which is beneficial to improving the processing efficiency. After the workpiece is processed, the workpiece can be placed between the mounting block 40 and the auxiliary inclined surface 34 for storage. And the covering cloth 42 can be pulled out from the storage cavity 44 and wound around the surface of the processed workpiece to wrap the workpiece for temporary storage, avoiding the cutting chips flying onto the surface of the workpiece and damaging the surface of the workpiece during the subsequent processing, which is beneficial to improving the protection ability of the processed workpiece.

[0033] When it is necessary to move the position of the clamped workpiece, the fixture adjustment motor 25 is started to drive the fixture adjustment screw 26 to rotate. Then, under the action of the thread structure, the fixture adjustment seat 23 moves. Since the fixture adjustment seat 23 is fixed to the fixture adjustment block 24, the fixture adjustment block 24 slides along the extension direction of the fixture adjustment guide rail 22, achieving the purpose of restricting the movement path of the fixture adjustment seat 23, thereby improving the stability of the clamped workpiece during movement. And during the movement of the fixture adjustment seat 23, the compression spring 28 always applies pressure to the fixture adjustment seat 23, so that the thread connection between the fixture adjustment seat 23 and the fixture adjustment screw 26 can be tightly engaged, avoiding the error of the workpiece movement position caused by the thread engagement error, and further avoiding the expansion of the processing error. At the same time, due to the pressure of the compression spring 28, the contact pressure between the engaging surfaces of the thread connection between the fixture adjustment seat 23 and the fixture adjustment screw 26 increases, and then the friction force increases. Since the main shaft 29 drives the workpiece to rotate through the clamping chuck 31 and vibrations will occur, the phenomenon that the fixture adjustment seat 23 is displaced during use can be effectively avoided by increasing the friction force, further improving the machining accuracy of the workpiece.

[0034] After the tool adjustment motor 15 is started, it drives the tool adjustment screw 16 to rotate. Then, under the action of the thread structure, it drives the tool adjustment seat 14 to slide on the tool adjustment guide rail 13, thereby driving the tool rest mounting seat 17 and the tool rest tool to move. When it is necessary to change the tool, the position of the tool rest mounting seat 17 is changed to make the tool rest mounting seat 17 away from the clamping chuck 31. After changing the tool, it approaches the clamping chuck 31 again for processing, achieving the purpose of automatic tool change.

[0035] When the covering cloth 42 is used, there are multiple usage states. Since there are two sets of tool rest mounting seats 17 on the lathe, when one side of the tool rest mounting seat 17 is not in use, that is, when the double-spindle lathe only uses one side for processing, the covering cloth 42 in the mounting block 40 near the side where the tool rest mounting seat 17 is in use can be pulled out. Then, the end of the covering cloth 42 provided with the movable catch 43 is pulled towards the side of the unused tool rest mounting seat 17, so that the covering cloth 42 covers the unused tool rest mounting seat 17. Finally, the covering cloth 42 is snapped onto the fixed catch 41, as Figure 3 shown. Due to the action of the scroll spring, the rotating shaft rotates in the reverse direction to pull the covering cloth 42 to rewind onto the rotating shaft. At this time, the covering cloth 42 is in a tensioned state, and the covering cloth 42 blocks the vertical direction of the opening of the waste collection groove 11. During the process of machining the material, cutting chips fly onto the covering cloth 42. Then, because the covering cloth 42 is in a tensioned and inclined state, at this time, under the action of gravity, the cutting chips slide towards the direction of the mounting block 40 and finally move between the auxiliary inclined surface 34 and the mounting block 40. And because the auxiliary inclined surface 34 is also an inclined surface, at this time, the cutting chips can slide into the waste collection groove 11 through the discharge cavity 46 for storage. When the machining of the material is completed, the cutting tool cuts and separates the material. The machined material falls under the action of gravity. When the falling point deviates, it can land on the covering cloth 42 and, after being buffered by the covering cloth 42, moves along the covering cloth 42 to the connection between the auxiliary inclined surface 34 and the mounting block 40. At this time, the machined material can be temporarily stored at the connection between the auxiliary inclined surface 34 and the mounting block 40. At this time, the mounting block 40 can impose a certain restriction on the rolling of the material, as Figure 5 shown. Since the machining interval time of the machine tool is mainly determined by the time for loading and unloading materials, at this time, there is no need for the manipulator structure to perform the unloading operation of the material, and the manipulator structure only needs to perform the loading operation. Compared with the operation of the manipulator structure for unloading first and then loading, after reducing the unloading process, the operation time of the manipulator is reduced, which is beneficial to greatly shortening the machining interval of the machine tool when the cost of the machine tool remains unchanged, that is, when there is only one set of manipulator structure, and improving the production efficiency of the machine tool.

[0036] When a manipulator structure and a loading structure are installed on the machine tool, the loading structure can be set into two groups, and the two groups of loading structures are respectively located on the mutually remote sides of the two clamping chucks 31. The feeding motors 19 in the two loading structures drive in the same direction. At this time, one flat chain 18 moves towards the machine tool base 10, and the other flat chain 18 moves away from the machine tool base 10. After the material processing is completed, the grasping end of the manipulator 33 grabs the material and places it in the flat chain 18 moving away from the machine tool base 10, so as to transfer the material outside the machine tool base 10. The unprocessed material is placed in the flat chain 18 moving towards the machine tool base 10. At this time, the grasping end of the manipulator 33 grabs the material and clamps it on the clamping chuck 31 for processing, thus forming a complete automated production line.

[0037] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A parallel double-spindle lathe, comprising a machine tool base (10), characterized in that: It also includes those installed on the machine tool base (10). There are two parallel main shafts (29). A clamping chuck (31) is arranged on the axial end side of the main shaft (29), and the clamping chuck (31) is power-connected to the main shaft (29). A tool rest mounting seat (17) is arranged on the side of the clamping chuck (31) away from the main shaft (29). The tool rest mounting seats (17) are respectively located on the mutually remote sides of the clamping chuck (31). A tool rest and cutting tools are also arranged on the tool rest mounting seat (17). A waste collection groove (11) is opened between the two tool rest mounting seats (17). Auxiliary inclined surfaces (34) are arranged on both sides of the opening of the waste collection groove (11) facing the tool rest mounting seat (17). A mounting block (40) is arranged at the connection of the auxiliary inclined surface (34) and the waste collection groove (11) and is fixedly connected to the machine tool base (10). A receiving cavity (44) is opened in the mounting block (40), and the opening faces the waste collection groove (11). A rotating shaft is rotatably arranged in the receiving cavity (44). A covering cloth (42) is wound around the rotating shaft, and one end of the covering cloth (42) extends outside the mounting block (40). An air guiding part is arranged on the mounting block (40) for exhausting air outwards. A fixture adjusting structure is arranged between the clamping chuck (31) and the machine tool base (10), and the fixture adjusting structure is used to adjust the position of the clamping chuck (31). A tool adjusting structure is arranged between the tool rest mounting seat (17) and the machine tool base (10), and the tool adjusting structure is used to adjust the position of the tool rest. Among them, both the main shaft (29) and the clamping chuck (31) are arranged on the fixture adjusting structure, and several cutting tools are fixed on the tool rest.

2. The parallel two-spindle lathe according to claim 1, characterized in that: The fixture adjusting structure includes A fixture adjusting guide rail (22) is fixed on the machine tool base (10) and the extending direction is the same as the axial direction of the main shaft (29). A fixture adjusting block (24) is slidably arranged on the fixture adjusting guide rail (22). A fixture adjusting seat (23) is fixedly connected to the fixture adjusting block (24). A fixture adjusting screw (26) is rotatably arranged on the machine tool base (10), and the fixture adjusting screw (26) is threadedly connected to the fixture adjusting seat (23). A fixture adjusting motor (25) is fixed on the machine tool base (10) and is power-connected to the end of the fixture adjusting screw (26). A gearbox (30) is arranged between the main shaft (29) and the clamping chuck (31) and is fixed to the fixture adjusting seat (23). The gearbox (30) is respectively power-connected to the main shaft (29) and the clamping chuck (31).

3. A parallel two-spindle lathe according to claim 2, characterized in that: A limiting block (27) is arranged on the side of the fixture adjusting screw (26) facing the machine tool base (10). The side surface of the fixture adjusting seat (23) abuts against the machine tool base (10). A compression spring (28) is fixedly arranged between the limiting block (27) and the fixture adjusting seat (23).

4. A parallel double-spindle lathe according to claim 1, characterized in that: The tool adjusting structure includes A cutting base (12) is inclined and fixed on the machine tool base (10) towards the direction of the waste collection groove (11). A tool adjusting guide rail (13) is fixedly arranged on the inclined side of the cutting base (12). A tool adjusting seat (14) is slidably arranged on the tool adjusting guide rail (13). The tool adjusting screw rod (16) is rotationally arranged on the cutting base (12) and is in threaded connection with the tool adjusting seat (14). The tool adjusting motor (15) is fixedly connected to the cutting base (12) and is in power connection with the end of the tool adjusting seat (14).

5. A parallel double-spindle lathe according to claim 1, characterized in that: The air guiding part includes The air jet head (45) is arranged on the outer side of the mounting block (40) and is oriented towards the clamping chuck (31). The air charging pipe (48) has one end communicating with the air jet head (45).

6. A parallel double-spindle lathe according to claim 1, characterized in that: One end of the covering cloth (42) located outside the mounting block (40) is fixedly provided with a movable clamping block (43), and the fixed clamping block (41) is fixedly arranged on one side of the machine tool base (10) where the two tool rest mounting seats (17) are far away from each other. The fixed clamping block (41) can be clamped with the movable clamping block (43).

7. A parallel double-spindle lathe according to claim 1, characterized in that: There is a gap between the mounting block (40) and the machine tool base (10) to form a discharging cavity (46).

8. A parallel double-spindle lathe according to claim 1, characterized in that: The lathe further includes a manipulator structure, and the manipulator structure includes The manipulator support frame (32) is fixedly arranged on the machine tool base (10). The manipulator (33) is fixed on the manipulator support frame (32). A grasping end is arranged on the manipulator (33), and the grasping end is located between the tool rest mounting seat (17) and the clamping chuck (31).

9. A parallel double-spindle lathe according to claim 1, characterized in that: The lathe further includes a loading structure, and the loading structure includes The feeding base (21) is fixedly connected to the machine tool base (10) through a support frame. A number of feeding rollers (20) are arranged side by side and rotatably arranged on the feeding base (21). The flat chain (18) surrounds a number of feeding rollers (20) and forms a sprocket structure with the feeding rollers (20). The feeding motor (19) is fixed on the feeding base (21) and is in power connection with the feeding rollers (20).

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