CN111761079A - A double-spindle double-turret upside-down machine tool - Google Patents

Abstract

The invention provides a double-spindle double-turret machine tool, which belongs to the field of numerical control machines and comprises a machine tool body, wherein a mounting platform horizontally arranged along an X axis is arranged on the machine tool body, an X axis guide rail is horizontally arranged on the mounting platform, a first upright post and a second upright post are sequentially arranged above the mounting platform, a first driving part for driving the first upright post to move along the X axis guide rail and a second driving part for driving the second upright post to move along the X axis guide rail are also arranged on the machine tool body, a first main shaft part is arranged on the first upright post, a second turret part is arranged on the second upright post, a first turret part is arranged on one side of the machine tool body positioned on the first main shaft part, and a second main shaft part is arranged between the first upright post and the second upright post. The automatic feeding device has the functions of automatic feeding, automatic processing and automatic discharging, and has high automation degree; the machine tool is combined forward and backward, the workpiece does not need to be turned over during processing, and continuous production can be carried out; the X-axis guide rail is horizontally arranged to move more stably, and the machining precision is high; and each mechanism of the machine tool has compact structure and compact layout of the whole machine.

Description

A double-spindle double-turret upside-down machine tool

technical field

The invention relates to the field of machine tools, in particular to a double-spindle double-turret upside-down car.

Background technique

With the revitalization and development of the national equipment manufacturing industry, CNC lathes, as the mainstream products of the lathe industry, have become the key equipment to realize the modernization of the equipment manufacturing industry.

The upside-down lathe is one of many lathes. The main shaft of the upside-down lathe has a large output torque and is mainly used in the automotive industry, especially for processing disc parts such as wheel hubs and brake discs. The turret does not move when machining the workpiece, and the integrated fixture on the spindle clamps the workpiece. During turning, the spindle drives the workpiece to rotate and move to complete the turning.

As shown in the patent with the bulletin number CN204770699U named as the automatic up-and-down composite CNC turning center, it includes two main shaft parts and two turret parts.

As shown in the above patent, the machine tool is provided with a vertical bed, the side of the bed is provided with guide rails along the X-axis direction, and two carriages are hung on the guide rails. The spindle on the left and the turret on the right are respectively Installed on two pallets to achieve left and right movement. In the above structure, the carriage is hung on the side of the bed. Since the spindle and the turret are heavy and integrated with the power drive, the pressure on the guide rail is very large when the carriage moves and the spindle and the turret act, which is easy to cause the guide rail to deform. , and the unstable movement of the spindle and the turret, thus affecting the machining accuracy.

SUMMARY OF THE INVENTION

In view of this, the purpose of the present invention is to provide a double-spindle and double-turret up-and-down machine tool, wherein the machine tool spindle and the turret move smoothly and have high machining accuracy.

In order to solve the above-mentioned technical problems, the technical scheme of the present invention is:

A double-spindle double-turret upside-down machine tool, comprising a bed, a mounting platform horizontally arranged along an X-axis on the bed, an X-axis guide rail lying on the mounting platform, and a No. A column and a second column, the first column and the second column are both slidably connected to the X-axis guide rail, and the bed is also provided with a first driving part that drives the first column to move along the X-axis guide rail, and drives the second column to move along the X-axis guide rail. The second drive part that the column moves along the X-axis guide rail, the first column is provided with a first main shaft part, the second column is provided with a second turret part, and the bed is located at one of the first main shaft parts. A first turret part is arranged on the side, and a second main shaft part is arranged on the bed between the first column and the second column.

Through the above technical solution, the installation platform is set horizontally, and the X-axis guide rails lie on the installation platform, so that the first column and the second column are pressed against the X-axis guide rails on the installation platform, which is equivalent to the installation platform supporting the first column and the second column. The weight of the two columns, when the first column and the second column move, will not produce lateral shearing force on the X-axis guide rail, thus effectively avoiding the bending deformation of the X-axis guide rail; Instead of the side hanging setting, the pressure on the X-axis guide rail by the first column and the second column is also more uniform, and there is no unilateral force. The movement of the first column and the second column is more stable and reliable, thereby improving the machining accuracy of the machine tool ;

In addition, the machine tool is combined forward and reverse, and the workpiece does not need to be turned over during processing, which effectively improves the processing efficiency and processing accuracy of the machine tool.

Preferably, the first main shaft portion includes a first main shaft that is vertically slidably connected to the first column, a third driving portion that drives the first main shaft to move up and down, a first hydraulic chuck disposed on the first main shaft, The fourth driving part drives the first spindle to rotate, and the first spindle acts on the first turret part.

Through the above technical solution, the first spindle can not only move laterally along the X-axis guide rail direction, but also move up and down in the vertical direction, and can also rotate on its own; under the action of the first hydraulic chuck, the first spindle can grab the workpiece, high degree of automation.

Preferably, the first tool turret part includes a first tool disk rotatably connected to the bed and a first power part for driving the first tool disk to rotate, the first tool disk is located under the first spindle and the first tool disk The axis of rotation of the first spindle is perpendicular to the axis of rotation of the first main shaft.

Through the above technical solution, the first tool disc can rotate around its own rotation axis to realize tool switching; the first tool disc is located below the first main shaft, and the horizontal arrangement of the rotation axis reduces the occupied space and makes the machine tool structure more compact.

Preferably, the second main shaft portion includes a second main shaft standing on the bed, a second hydraulic chuck provided on the second main shaft, and a fifth driving portion that drives the second main shaft to rotate.

Through the above technical solution, the second main shaft can rotate under the action of the fifth driving part, and the workpiece is clamped by the second hydraulic chuck.

Preferably, the second turret part comprises a mounting seat connected to the second upright column by vertical sliding, a second power part for driving the mounting seat to move up and down, a second tool disc rotatably connected to the bottom of the mounting seat, and driving the second The third power part for the rotation of the tool disk, and the rotation axis of the second tool disk is vertically arranged.

Through the above technical solution, the second column can drive the second tool disk to move back and forth along the X-axis direction, the second tool disk can move up and down in the vertical direction under the action of the second power part, and the second tool disk can also revolve around itself The vertically arranged axis rotates to switch the tool to act on the second spindle.

Preferably, the second tool disc is provided with a plurality of tool installation positions in the circumferential direction, one of the tool installation positions is provided with a blanking jaw, and the machine bed is located on the side of the second cutter disc away from the second main shaft. There is a workpiece blanking platform.

Through the above technical solution, not only tools but also blanking jaws can be installed on the second tool disc. When the workpiece is processed on the second main shaft, the tool disc is rotated to move the blanking jaws to the top of the second main shaft. You can directly grab the workpiece; then turn the tool plate, turn the blanking jaw to the workpiece blanking platform, and then unload the workpiece; this process does not require additional manipulators, and the workpiece blanking can be easily realized. Compact, convenient and stable cutting.

Preferably, the workpiece unloading platform includes a first guide rail, a workpiece conveyor belt disposed on the first guide rail, and a sixth driving part for driving the conveyor belt to move, and one end of the first guide rail is located away from the second tool disc. one side of the second main shaft portion.

With the above technical solution, when the workpiece falls on the first guide rail, the workpiece can be transported to the outside of the machine tool by means of the workpiece conveyor belt to complete the workpiece transfer and unloading.

Preferably, an automatic feeding mechanism is provided on the bed on the side of the first main shaft part away from the second main shaft part.

Through the above technical solution, the automatic feeding mechanism can realize the automatic feeding of the workpiece on the machine tool, save labor, and make feeding more convenient and stable.

Preferably, the automatic feeding mechanism includes a primary feeding platform provided on the bed, a seventh driving part that drives the primary feeding platform to move in the direction of the first main shaft, and the primary feeding platform is slidably connected to the frame , the first-level feeding platform is provided with a second-level feeding platform and an eighth drive part that drives the second-level feeding platform to move in the direction of the first main shaft, and the second-level feeding platform is slidingly connected to the first-level feeding platform. There is a feeding table on the secondary feeding platform.

Through the above technical solution, the workpiece is positioned on the feeding platform, and the workpiece is accurately sent to the bottom of the first main shaft by the two-stage feeding method, so that the first main shaft only needs to move down to take the material, and there is no need to move laterally when taking the material. , the step of positioning the workpiece by the spindle and moving laterally to find the position of the workpiece is omitted; the above steps only need to locate the final feeding position of the two-stage feeding platform. Single positioning can reduce the error caused by multi-step positioning and ensure the workpiece The accuracy of the material makes the feeding process smoother and more convenient.

Preferably, the automatic feeding mechanism further includes a feeding mechanism arranged on one side of the bed, the feeding mechanism includes a feeding platform and a feeding gripper, the feeding platform is provided with a guide rail bracket, and the guide rail bracket is provided on the A moving bracket is slidably connected, the guide rail bracket is provided with a ninth driving part that drives the movement of the moving bracket, the feeding gripper is slidably connected to the moving bracket along the vertical direction of the moving bracket, and the moving bracket is provided with There is a tenth driving part that drives the movement of the feeding jaws.

Through the above technical solution, the feeding gripper can automatically pick up the workpiece from the feeding platform and send it to the feeding platform, so as to realize fully automatic feeding and a higher degree of automation.

The technical effect of the present invention is mainly reflected in the following aspects:

1. It has the functions of automatic feeding, automatic processing and automatic unloading, with a high degree of automation;

2. The machine tool is combined forward and backward, and the workpiece does not need to be turned over during processing, which effectively improves the processing efficiency and processing accuracy of the machine tool;

3. While the second spindle is processing the previous workpiece, the first spindle can process the next workpiece, the machine tool continues to run smoothly, and the processing efficiency is high;

4. The X-axis guide rail is set horizontally, and the first column and the second column use the form of lying on the X-axis guide rail instead of the side hanging form, which makes the machine tool move more smoothly and the machining accuracy is high;

5. Each mechanism of the machine tool is compact in structure, occupies a small area, and has a compact layout of the whole machine.

Description of drawings

Fig. 1 is the structural schematic diagram of the main body part of the machine tool in the embodiment, and is intended to represent the structure at the installation platform;

2 is a schematic diagram of the first state structure of the machine tool as a whole in the embodiment, wherein the first-level feeding platform and the second-level feeding platform are both in the end position;

3 is a schematic diagram of the second state structure of the machine tool as a whole in the embodiment, wherein the primary feeding platform and the secondary feeding platform are both in the starting position;

Fig. 4 is an enlarged view of part A in Fig. 3;

Figure 5 is an enlarged view of part B in Figure 3;

FIG. 6 is an enlarged view of part C in FIG. 3 .

Reference numerals: 1. Machine bed; 2. Installation platform; 3. X-axis guide rail; 4. First column; 5. Second column; 6. First spindle part; 61. First spindle; 62, Third drive part; 63, the first hydraulic chuck; 64, the fourth drive part; 7, the second turret part; 71, the mounting seat; 72, the second power part; 73, the second tool disc; 74, the third power part 8, the first turret part; 81, the first tool disc; 82, the first power part; 9, the second spindle part; 91, the second spindle; 92, the second hydraulic chuck; 93, the fifth drive part ; 10, the first drive part; 11, the second drive part; 12, the tool installation position; 13, the blanking jaw; 14, the detection probe; ; 18, feeding port; 19, warehouse door; 20, thirteenth drive part; 21, flying knife; 100, workpiece blanking platform; 101, first guide rail; 102, workpiece conveyor belt; 103, sixth drive part; 104, feeding end; 105, discharging end; 106, baffle plate; 107, eleventh drive part; 108, sensor; 109, second guide rail; 200, automatic feeding mechanism; 210, first-level feeding platform; 220, the seventh driving part; 230, the secondary feeding platform; 240, the eighth driving part; 250, the feeding table; 260, the feeding mechanism; 261, the feeding platform; 2611, the feeding rack; 2612, the feeding tray; 262, feeding gripper; 263, guide rail bracket; 264, moving bracket; 265, ninth drive part; 266, tenth drive part; 267, elastic buffer; 269, first sensor.

Detailed ways

The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings, so as to make the technical solutions of the present invention easier to understand and grasp.

As shown in Figures 1 and 2, a double-spindle and double-turret upside-down machine tool includes a bed 1. The bed 1 is provided with an installation platform 2 arranged horizontally along the X-axis, and an X-axis guide rail is lying on the installation platform 2. 3. A first column 4 and a second column 5 are successively erected above the installation platform 2 , and both the first column 4 and the second column 5 are slidably connected to the X-axis guide rail 3 . The bed 1 is also provided with a first driving part 10 for driving the first column 4 to move along the X-axis guide rail 3 , and a second driving part 11 for driving the second column 5 to move along the X-axis guide rail 3 . The first column 4 is provided with a first main shaft portion 6 , and the second column 5 is provided with a second turret portion 7 . The bed 1 is provided with a first turret portion 8 on one side of the first main shaft portion 6 , and the bed 1 is provided with a second main shaft portion 9 between the first column 4 and the second column 5 . Among them, in order to realize automatic feeding and automatic unloading, an automatic feeding mechanism 200 is provided on the bed 1, on the side of the first main shaft part 6 away from the second main shaft part 9; on the bed 1, on the second tool A workpiece unloading platform 100 is provided on the side of the disc 73 away from the second main shaft portion 9 .

1 and 2, the first main shaft portion 6 includes a first main shaft 61 that is vertically slidably connected to the first upright column 4, a third driving portion 62 that drives the first main shaft 61 to move up and down, and a third driving portion 62 disposed on the first main shaft 61. The upper first hydraulic chuck 63 and the fourth driving part 64 for driving the first main shaft 61 to rotate. The first main shaft 61 is arranged vertically downward and acts on the first turret part 8 .

The first tool turret part 8 includes a first tool disk 81 rotatably connected to the bed 1 and a first power part 82 for driving the first tool disk 81 to rotate. The first tool disk 81 is located under the first spindle 61 and the first tool The rotation axis of the disk 81 is perpendicular to the rotation axis of the first main shaft 61 .

1 , 3 and 5 , the second main shaft portion 9 includes a second main shaft 91 standing on the bed 1 , a second hydraulic chuck 92 disposed on the second main shaft 91 , and a first main shaft 91 for driving the second main shaft 91 to rotate. Five drive parts 93 . The second main shaft 91 is also provided with a flying cutter 21 in the circumferential direction, and the flying cutter 21 can complete the hexagonal turning of the workpiece. The detection probe 14 is provided on the bed 1 between the first main shaft 61 and the second main shaft 91 . Here, a support rod 15 is provided on the bed 1 and located at the second main shaft 91 , the detection probe 14 stands on the support rod 15 and the probe of the detection probe 14 is arranged upward. When the first spindle 61 completes the processing of the workpiece, it can drive the workpiece to move in the direction of the detection probe 14, and use the detection probe 14 to detect the size of the workpiece on the first spindle 61, thereby judging whether the tool is chipped or damaged, and in advance Predict the tool status, replace the tool in time, block the defective products in time, and improve the processing efficiency.

1 , 3 and 6 , the second turret portion 7 includes a mounting seat 71 that is vertically slidably connected to the second column 5 , a second power portion 72 that drives the mounting seat 71 to move up and down, and a second power portion 72 that is rotatably connected to the mounting seat 71 The second tool disk 73 at the bottom and the third power part 74 for driving the second tool disk 73 to rotate, and the rotation axis of the second tool disk 73 is vertically arranged. Among them, the second tool disc 73 is provided with a plurality of tool installation positions 12 in the circumferential direction, and one of the tool installation positions 12 is provided with a blanking jaw 13 , and the blanking jaw 13 is used in cooperation with the workpiece blanking platform 100 .

2 , 3 and 6 , the workpiece unloading platform 100 includes a first guide rail 101 , a workpiece conveyor belt 102 disposed on the first guide rail 101 , and a sixth driving part 103 for driving the conveyor belt to move. One end of the first guide rail 101 is located on the side of the second tool disc 73 away from the second spindle portion 9 . One end of the first guide rail 101 away from the second tool disc 73 receives a second guide rail 109 , and one end of the second guide rail 109 away from the first guide rail 101 is disposed obliquely downward. The workpiece is sent from the first guide rail 101 to the second guide rail 109 via the workpiece conveyor belt 102, and automatically falls to the collection box by the slope of the second guide rail 109 to complete the workpiece conveyance.

Wherein, the bed 1 is located on one side of the first guide rail 101 with a cover baffle 16 standing, and the first guide rail 101 passes through the cover baffle 16 . The side of the first guide rail 101 located on the cover baffle 16 close to the second tool plate 73 is the feed end 104 , and the first guide rail 101 located on the side of the cover baffle 16 away from the second tool plate 73 is the discharge end 105 . The feed end 104 is slidably connected with a baffle plate 106 for opening and closing the feed end 104 . The first guide rail 101 is provided with an eleventh driving part 107 for driving the baffle plate 106 to move, and a sensor 108 for sensing whether the material falls on the workpiece conveyor belt 102 . When the sensor 108 senses that a workpiece falls on the workpiece conveyor belt 102 of the first guide rail 101 , it sends an electrical signal to the eleventh drive part 107 , and the eleventh drive part 107 drives the baffle plate 106 to move, so that the baffle plate 106 blocks the movement of the baffle plate 106 Feed end 104; here, since the machine tool does not stop processing other workpieces during the conveying process of the workpiece, the baffle 106 can prevent the internal waste of the machine tool from entering the first guide rail 101 during the conveying process of the workpiece, causing the workpiece scratches.

2 , 3 and 4 , the automatic feeding mechanism 200 includes a primary feeding platform 210 disposed on the bed 1 , and a seventh driving portion 220 that drives the primary feeding platform 210 to move in the direction of the first spindle portion 6 . The primary feeding platform 210 is slidably connected to the frame. The primary feeding platform 210 is provided with a secondary feeding platform 230 and an eighth driving part 240 that drives the secondary feeding platform 230 to move in the direction of the first main shaft 61 . The secondary feeding platform 230 is slidingly connected to the primary feeding platform 210, and the secondary feeding platform 230 is provided with a feeding platform 250; the feeding platform 250 is vertically slidably connected to the secondary feeding platform 230, and the secondary feeding platform An elastic buffer member 267 for restricting the movement of the feeding table 250 is provided on the 230 . When the first main shaft 61 reclaims the material, if the first main shaft 61 moves down to an excessive position, the feeding table 250 can buffer in the vertical direction, so as to avoid damage to components caused by rigid contact.

The automatic feeding mechanism 200 further includes a feeding mechanism 260 disposed on one side of the bed 1 , and the feeding mechanism 260 includes a feeding platform 261 and a feeding gripper 262 . A guide rail bracket 263 is provided on the feeding platform 261 , and a moving bracket 264 is slidably connected to the guide rail bracket 263 . The feeding gripper 262 is slidingly connected to the moving frame 264 along the vertical direction of the moving frame 264 . The moving frame 264 is provided with a tenth driving part 266 for driving the feeding gripper 262 to move.

Here, the feeding platform 261 includes a feeding rack 2611 and a feeding tray 2612 . The material rack 2611 is provided with a twelfth driving part (not shown in the figure) that drives the feeding tray 2612 to reciprocate along a horizontal line. When the first row of workpieces on the feeding tray 2612 is finished, the feeding tray 2612 can move forward to send the second row of workpieces under the feeding jaws 262 for clamping.

In addition, the guide rail bracket 263 is provided with a first sensor 269 for sensing whether the workpiece is placed on the loading table 250 . When the first sensor 269 senses that a workpiece is placed on the feeding table 250, an electrical signal is sent to the first driving part 10 and the second driving part 11, so that the primary feeding platform 210 and the secondary feeding platform 230 move, and the feeding The stage 250 is sent to the designated location. Both ends of the primary feeding platform 210 are provided with second sensors (not shown in the figure) for sensing the position of the secondary feeding platform 230 . The second sensors at both ends are used to determine whether the secondary feeding platform 230 is at the start position or the end position; when the secondary feeding platform 230 is at the end position, that is, when the feeding table 250 is located below the first main shaft 61, the second sensor sends the second sensor to the first position. The electric signal of the driving part of the first main shaft 61, the first main shaft 61 starts to take the material, and then the secondary feeding platform 230 moves to the initial position; when the secondary feeding platform 230 is in the initial position, that is, the feeding table 250 is located on the upper When the feeding jaw 262 is below, the second sensor sends an electrical signal to the driving part of the feeding jaw 262, the feeding jaw 262 places the workpiece on the feeding table 250, and then the secondary feeding platform 230 moves toward the end position.

The side of the bed 1 close to the feeding platform 261 is provided with a casing baffle 17, and the casing baffle 17 is provided with a feeding port 18 for the primary feeding platform 210 and the secondary feeding platform 230 to pass through, and a feeding port 18 for opening and closing. There is also a thirteenth drive part 20 on the housing baffle 17 that drives the door 19 to open and close. When the workpiece is in the processing state, the bin door 19 closes the feeding port 18, so as to prevent the ejection of waste chips, which affects the smoothness and accuracy of the movement of the feeding platform.

The following examples illustrate the general processing steps of the machine tool:

1. The feeding mechanism automatically feeds the material;

2. The first spindle clamps the workpiece and sequentially performs the outer circle machining and inner hole machining of the lower part of the workpiece;

3. On-line inspection of the workpiece processed by the first spindle;

4. The first spindle carries the workpiece for hexagonal turning by the flying tool on the second spindle;

5. The first spindle sends the workpiece to the top of the second spindle, and the second spindle clamps the workpiece;

6. The second turret part carries out outer circle machining, inner hole machining, side hole machining, etc. on the upper part of the workpiece on the second spindle;

7. The unloading jaws on the second turret take the materials from the second spindle and place them on the workpiece unloading platform;

8. The workpiece unloading platform transports the workpiece to the designated location for collection.

The whole process of feeding, processing, testing and unloading is carried out automatically, with a high degree of automation, instead of manual operation, high processing efficiency and high processing accuracy.

The above-mentioned driving parts and power parts can be power components such as motors, air cylinders, and hydraulic cylinders, which can be selected according to the actual application environment.

Of course, the above are only typical examples of the present invention. In addition, the present invention can also have other various specific embodiments. All technical solutions formed by equivalent replacement or equivalent transformation all fall within the scope of protection of the present invention. Inside.

Claims (10)

1. The utility model provides a two main shafts two turrets machine tool just handstand, includes lathe bed (1), characterized by: be equipped with on lathe bed (1) along mounting platform (2) that X axle level set up, X axle guide rail (3) have crouched on mounting platform (2), first stand (4) and second stand (5) have stood in proper order above mounting platform (2), first stand (4) and second stand (5) all slide and connect in X axle guide rail (3), still be equipped with on lathe bed (1) and drive first stand (4) along first drive division (10) of X axle guide rail (3) motion, drive second stand (5) along second drive division (11) of X axle guide rail (3) motion, be equipped with first main shaft (61) portion (6) on first stand (4), be equipped with second sword tower portion (7) on second stand (5), one side that lathe bed (1) is located first main shaft (61) portion (6) is equipped with first sword tower portion (8), lathe bed (1) is located and is equipped with second main shaft portion (5) between first stand (4) and second stand (5), one side that lathe bed (1) is located first main shaft (6) is equipped with second sword tower portion (8), first sword tower portion ( (9).

2. The double-spindle double-turret machine tool according to claim 1, wherein: the first main shaft part (6) comprises a first main shaft (61) which is vertically connected to the first upright post (4) in a sliding mode, a third driving part (62) which drives the first main shaft (61) to move up and down, a first hydraulic chuck (63) arranged on the first main shaft (61), and a fourth driving part (64) which drives the first main shaft (61) to rotate, and the first main shaft (61) acts on the first cutter tower part (8).

3. The double-spindle double-turret machine tool according to claim 2, wherein: the first tool tower part (8) comprises a first tool disc (81) rotationally connected to the lathe bed (1) and a first power part (82) driving the first tool disc (81) to rotate, the first tool disc (81) is located below the first spindle (61), and the rotating axis of the first tool disc (81) is perpendicular to that of the first spindle (61).

4. The double-spindle double-turret machine tool according to claim 1, wherein: the second main shaft part (9) comprises a second main shaft (91) standing on the lathe bed (1), a second hydraulic chuck (92) arranged on the second main shaft (91) and a fifth driving part (93) for driving the second main shaft (91) to rotate.

5. The double-spindle double-turret machine tool according to claim 1, wherein: the second tool tower part (7) comprises a vertical sliding connection part, a second power part (72), a second tool disc (73) and a third power part (74), wherein the second power part is connected to a mounting seat (71) of the second upright post (5) in a sliding mode, drives the mounting seat (71) to move up and down, the second tool disc (73) is connected to the bottom of the mounting seat (71) in a rotating mode, the third power part drives the second tool disc (73) to rotate, and the rotating axis of the second tool disc (73) is vertically arranged.

6. The double-spindle double-turret machine tool according to claim 5, wherein: the lathe is characterized in that a plurality of cutter mounting positions (12) are arranged on the second cutter disc (73) in the circumferential direction, a blanking clamping jaw (13) is arranged on one cutter mounting position (12), and a workpiece blanking platform (100) is arranged on the lathe bed (1) and on one side, far away from the second spindle (91), of the second cutter disc (73).

7. The double-spindle double-turret machine tool according to claim 6, wherein: the workpiece blanking platform (100) comprises a first guide rail (101), a workpiece conveying belt (102) arranged on the first guide rail (101), and a sixth driving portion (103) used for driving the conveying belt to move, wherein one end of the first guide rail (101) is located on one side, away from the second main shaft portion (9), of the second cutter disc (73).

8. The double-spindle double-turret machine tool according to claim 1, wherein: and an automatic feeding mechanism (200) is arranged on the lathe bed (1) and positioned on one side of the first main shaft part (6) far away from the second main shaft part (9).

9. The double-spindle double-turret machine tool according to claim 8, wherein: the automatic feeding mechanism (200) comprises a first-level feeding platform (210) arranged on the lathe bed (1), and a seventh driving part (220) for driving the first-level feeding platform (210) to move towards the direction of the first main shaft part (6), wherein the first-level feeding platform (210) is connected to the rack in a sliding manner, an eighth driving part (240) for driving a second-level feeding platform (230) to move towards the direction of the first main shaft (61) is arranged on the first-level feeding platform (210), the second-level feeding platform (230) is connected to the first-level feeding platform (210) in a sliding manner, and a feeding platform (250) is arranged on the second-level feeding platform (230).

10. The double-spindle double-turret machine tool according to claim 9, wherein: automatic feeding mechanism (200) are still including feeding mechanism (260) of locating lathe bed (1) one side, feeding mechanism (260) are including feeding platform (261), material loading clamping jaw (262), be equipped with rail brackets (263) on feeding platform (261), it has movable support (264) to slide on rail brackets (263) to be connected with, be equipped with ninth drive division (265) that drive movable support (264) moved on rail brackets (263), material loading clamping jaw (262) are slided along the vertical direction of moving support (264) and are connected in movable support (264), be equipped with tenth drive division (266) that drive material loading clamping jaw (262) removed on movable support (264).

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