CN110842570A - Vertical turning and milling combined machining tool - Google Patents

Abstract

The invention belongs to the technical field of machining machine tools, in particular to a vertical turning-milling compound machining machine tool, comprising a machine tool, a vertical high-torque electric spindle is arranged on the machine tool, and the vertical high-torque electric spindle can rotate along the circumferential direction of the C axis. A fixed base is set on the fixed base, and a turret is set on the fixed base, and the turret can move left and right along the X-axis direction. The swing head is provided with a milling-turning compound electric spindle, the turning compound electric spindle can move up and down along the W-axis direction, and the output shaft of the milling-turning compound electric spindle is fixed with a tool. The compound electric spindle of the milling cutter of the present invention can adjust the displacement in the X-axis direction, realizes the adjustment of the inclination angle of the compound electric spindle of the milling cutter by swinging the oscillating head in the circumferential direction of the B-axis direction, and can move up and down along the W-axis direction to realize the cutting tool It can effectively meet the needs of turning, milling and drilling of the hub.

Description

A vertical turning-milling compound machining machine

Technical field:

The invention belongs to the technical field of machining machine tools, in particular to a vertical turning-milling compound machining machine tool.

Background technique:

As we all know, the traditional wheel hub processing technology is generally divided into three machine tools, one lathe to turn the concave surface, another lathe to turn the convex surface, and another machining center to process PCD holes (bolt holes) and valve core holes. The disadvantages of this process route are: 1 , The rhythm is unbalanced, the processing volume of the concave surface of the car is large, the rhythm is long, and the processing cycle of the convex surface of the car and the processing hole is short, resulting in waste of waiting; 2. Due to the secondary clamping when the machining center processes the hole, it will inevitably be brought into the clamping. Error, the position accuracy of PCD hole and rim is poor; 3. There are many equipments, many special tooling, more space occupied, and more waste in handling.

Invention content:

The purpose of the present invention is to provide a vertical car that integrates the machining of the convex surface, the drilling machining of the PCD hole and the valve core hole into one machine tool, completes all the machining procedures in one clamping, and overcomes all the defects of traditional machining. Milling compound machining machine.

The present invention is realized in this way:

The utility model relates to a vertical turning-milling compound processing machine tool, including a vertical high-torque electric spindle (which can be used as a C-axis), which is used for clamping products such as wheel hubs. One side of the vertical high-torque motorized spindle is equipped with a turret for turning, which can move in X and Z directions, and the other side is equipped with a milling-turning composite motorized spindle. It can also swing 90 degrees left and right along the B axis. At the same time, the milling-turning compound spindle can not only perform drilling and milling. After locking by the holding brake, it can also be used for lathe machining. To ensure the rigidity of the system, the holding brakes of the B-axis swing head, the milling-turning compound spindle and the vertical high-torque motorized spindle all adopt the company's unique high-rigidity special holding brake device. The brake device can form a rigid connection between the braked main shaft and the base, which can not only prevent rotation, but also resist axial force and side bending force, and can ensure that the main shaft bearing is not stressed no matter how complicated the force is.

In summary, the present invention can be used as a double-turret vertical turning, that is, when the workpiece is rotated, the left and right turning tools can be used for cutting at the same time, which nearly doubles the efficiency, and can drill straight holes and oblique holes, as well as simple milling.

Among them, an optional structure is: a vertical turning-milling compound processing machine tool, including a machine tool, and a vertical high-torque motorized spindle for fixing workpieces is arranged on the machine tool along the Z-axis direction, and the vertical high-torque motorized spindle can Rotating in the circumferential direction of the C-axis, a fixed base is set on the machine tool behind the vertical high-torque motorized spindle. The fixed base is provided with a turret. The turret can move left and right along the X-axis. There is a torque motor whose output shaft is arranged along the Y-axis direction. The torque motor can move up and down along the Z-axis direction. A swing head is fixed on the output shaft of the torque motor. The swing head is driven by the torque motor to swing circumferentially along the B-axis direction. A milling-turning compound electric spindle is provided, and a tool for turning, milling or drilling a workpiece is fixed on the output shaft of the milling-turning compound electric spindle.

The preferred structure is: a vertical turning-milling compound machining machine tool, including a machine tool, a vertical high-torque motorized spindle for fixing workpieces is arranged on the machine tool along the Z-axis direction, and the vertical high-torque motorized spindle can be along the C-axis circumferential direction. Rotating, a fixed base is provided on the machine tool behind the vertical high-torque electric spindle, and a turret is set on the fixed base. The turret can move left and right along the X-axis direction, and the turret is provided with an output A torque motor whose shaft is set along the Y-axis direction, a swing head is fixed on the output shaft of the torque motor, and the swing head is driven by the torque motor to swing circumferentially along the B-axis direction, and the swing head is provided with a milling machine whose output shaft is set along the W-axis direction. The turning compound electric spindle, and the milling-turning compound electric spindle can move up and down along the W-axis direction, and the output shaft of the milling-turning compound electric spindle is fixed with a tool for turning, milling or drilling the workpiece.

Preferably, the fixed base is provided with a second turret, the second turret can move left and right along the X-axis direction, and the second turret is provided with a support seat, and the support seat can move up and down along the Z-axis direction, and the support seat is provided with There is a milling cutter device for turning and milling workpieces.

Preferably, the fixed base is provided with a first sliding rail along the X-axis direction, and the first turret and the second turret are slidably connected to the first sliding rail.

Preferably, a second sliding rail is provided on the milling-turning composite electric spindle along the W-axis direction, and the swing head is slidably connected to the second sliding rail.

Preferably, a third slide rail is provided on the second turret along the Z-axis direction, and the support base is slidably connected to the third slide rail.

Preferably, the swing head, the vertical high-torque electric spindle and the milling-turning compound electric spindle are all provided with special brake devices. The holding brake device is locked with the rotating shaft, and the held rotating shaft forms a rigid connection with the base, which can not only prevent rotation but also resist axial force and lateral force. unforced.

Preferably, the holding brake device includes an elastic cylinder, a piston sleeved on the elastic cylinder, and a piston cylinder sleeved on the piston, an annular chute is opened on the inner wall of the piston cylinder, and an annular sliding groove is formed on the outer wall of the piston. A snap ring that slides up and down in the chute, and the snap ring divides the annular chute into an upper hydraulic chamber and a lower hydraulic chamber. The outer wall of the upper end of the piston is an outer conical surface that is wide at the top and narrow at the bottom, and the inner wall of the upper end of the piston is provided with an inner conical surface that matches the outer conical surface.

Preferably, a case shell is arranged on the periphery of the machine tool, and a retractable organ-type organ is arranged between the turret 1 and the case shell, between the turret 1 and the turret 2, and between the turret 2 and the case shell. The protective cover, and the organ-type protective cover isolates the first slide rail from the front and rear of the vertical high-torque motorized spindle.

Preferably, the front side cover of the swing head is provided with a main cover body, a work space is formed between the main cover body and the swing head, the second slide rail and the milling-turn composite electric spindle are located in the work space, and the main cover body There is a window corresponding to the position of the output end of the milling-turning compound electric spindle. The milling-turning compound electric spindle moves downward along the W-axis direction on the second slide rail, and drives the output end of the milling-turning compound electric spindle and the tool outward. Pass through the window to the outside of the main housing.

Preferably, the output end of the milling-turning composite electric spindle is sleeved with a sub-cover body, the sub-cover body corresponds to the structure of the window, and the sub-cover body and the window are slidably connected.

Compared with the prior art, the present invention has the following advantages:

1. The turret 1 of the present invention can move left and right along the X-axis direction to realize the displacement adjustment of the milling cutter compound electric spindle in the X-axis direction. With the help of the swing head to swing circumferentially along the B-axis direction, the inclination angle of the milling cutter compound electric spindle can be realized. At the same time, the milling cutter composite motorized spindle can move up and down along the W axis to realize the tool feeding or retracting, which effectively meets the turning, milling and drilling processing requirements of the wheel hub; thus the wheel hub only needs to be clamped and fixed on the vertical On the high-torque motorized spindle, with the help of the circumferential rotation adjustment of the vertical high-torque motorized spindle in the direction of the C axis, the hub can be processed in all processes. Its structure design is reasonable, the processing efficiency is fast and the processing accuracy is high. The special tooling for processing effectively overcomes the defects of transmission processing, and has various functions and a high degree of mechanical automation;

2. The rhythm of the present invention is basically balanced, and only one clamping is required, thereby ensuring machining accuracy and positional accuracy, overcoming traditional machining defects, saving site use area, and reducing equipment investment costs;

3. The present invention integrates the turning machining of the convex surface, the drilling machining of the PCD hole and the valve core hole into one machine tool, which effectively shortens the machining cycle of the workpiece and greatly improves the machining efficiency;

4. The present invention adopts a double turret structure, and the second turret can move left and right along the X-axis direction to realize the displacement adjustment of the milling cutter device in the X-axis direction. The displacement in the Z-axis direction is adjusted, so that during turning and milling, the milling cutter composite electric spindle and the milling cutter device can cut the hub at the same time, the processing efficiency is nearly doubled, and the processing cycle is effectively shortened.

Description of drawings:

Fig. 1 is the perspective view of the present invention;

Fig. 2 is the turret of the present invention-integral sectional view;

3 is a perspective view of the holding brake device of the present invention;

Figure 4 is a partial cross-sectional view of the brake device of the present invention;

5 is a structural diagram of the first driving mechanism, the third driving mechanism and the fixed base of the present invention;

Fig. 6 is the exploded view of the swing head of the present invention and the compound electric spindle of milling and turning;

Fig. 7 is the exploded view of turret two of the present invention and support seat;

8 is an overall perspective view of the present invention with an organ-type protective cover;

FIG. 9 is an overall perspective view of the present invention with a case casing.

In the picture: 1. Machine tool; 2. Vertical high-torque motorized spindle; 3. Fixed base; 4. First slide rail; 5. Turret one; 6. Torque motor; 7. Swing head; 8. Second slide Rail; 9. Milling-turn composite motorized spindle; 10. Turret 2; 11. Third slide rail; 12. Support seat; 13. Milling cutter device; 14. Elastic cylinder; 15. Piston; 16. Piston cylinder; 17. Annular chute; 18, snap ring; 19, upper hydraulic chamber; 20, lower hydraulic chamber; 21, elastic gap; 22, upper cylinder seat; 23, lower cylinder seat; 24, the first CNC motor; 25 26, the first driving screw; 27, the second numerical control motor; 28, the second driving screw; 29, the second driving nut; 30, the third numerical control motor; 31, the third driving screw ; 32, the third drive nut; 33, the fourth numerical control motor; 34, the fourth drive screw; 35, the fourth drive nut; 36, the case shell; 37, the organ-type protective cover; Auxiliary cover body; 40. Wheel hub.

Detailed ways:

The present invention is further described below with specific embodiment, referring to Fig. 1-9:

A vertical turning-milling compound machining machine tool, comprising a machine tool 1, a vertical high-torque motorized spindle 2 for fixing a workpiece is arranged on the machine tool 1 along the Z-axis direction, and the vertical high-torque motorized spindle 2 can rotate along the C-axis circumferential direction , a fixed base 3 is provided on the machine tool 1 on the rear side of the vertical high-torque motorized spindle 2, and the fixed base 3 is provided with a turret one 5, the turret one 5 can move left and right along the X-axis direction, and the turret One 5 is provided with a torque motor 6 whose output shaft is arranged in the direction of the Y-axis, and a swing head 7 is fixed on the output shaft of the torque motor 6, and the swing head 7 is driven by the torque motor 6 to swing circumferentially along the B-axis direction, and the swing head 7 There is a milling-turning compound electric spindle 9 whose output shaft is arranged along the W-axis direction, and the milling-turning compound electric spindle 9 can move up and down along the W-axis direction. The output shaft of the milling-turning compound electric spindle 9 is fixed on the output shaft for turning and milling the workpiece or drilling tools.

The cutter can be a drill for drilling, or a milling cutter for turning and milling.

At the same time, in order to facilitate the turning and milling of the hub 40, the fixed base 3 is provided with a second turret 10, the second turret 10 can move left and right along the X-axis direction, and the second turret 10 is provided with a support seat 12 , and the support seat 12 can move up and down along the Z-axis direction, and the support seat 12 is provided with a milling cutter device 13 for turning and milling the workpiece.

The milling cutter device 13 may be a common structure in the prior art, that is, it is composed of a main shaft of the machine tool 1 and a milling cutter, and the milling cutter is fixed on the output shaft of the main shaft of the machine tool 1 . In this embodiment, however, the milling cutter device 13 includes a circumferential turntable driven and rotated by a rotary motor, and more than two tool seats are evenly distributed on the circumference of the circumferential turntable, and milling cutters of different specifications are arranged on the tool seats. The rotation of the circumferential turntable is driven by a rotating motor to realize the switching of the tool holder and the corresponding milling cutter.

In this embodiment, the sliding connection structure between the turret one 5 and the turret two 10 and the fixed base 3 is as follows: the fixed base 3 is provided with a first slide rail 4 along the X-axis direction, and the turret one 5 and the second turret 10 are slidably connected with the first slide rail 4 .

In this embodiment, the sliding connection structure between the milling-turning compound electric spindle 9 and the swing head 7 is as follows: the milling-turning compound electric spindle 9 is provided with a second sliding rail 8 along the W-axis direction, and the swinging head 7 is connected to the first sliding rail 8 along the W-axis direction. Two slide rails 8 are slidingly connected.

In this embodiment, the sliding connection structure between the second turret 10 and the support base 12 is as follows: the second turret 10 is provided with a third slide rail 11 along the Z-axis direction, the support base 12 and the third slide rail 11 Slide to connect.

The working principle of the present invention: the turret one 5 moves left and right along the X-axis direction on the first sliding rail 4 to realize the position adjustment of the milling-turning compound electric spindle 9 in the X-axis direction; the torque motor 6 drives the swing head 7 along the X-axis direction The B-axis is rotated in the circumferential direction to realize the adjustment of the inclination angle of the milling-turning compound electric spindle 9 and the tool; and the milling-turning compound electric spindle 9 moves up and down along the W-axis direction on the second slide rail 8 to realize the advance and retraction of the tool. Knife work. The second turret 10 moves left and right along the X-axis direction on the first slide rail 4 to realize the position adjustment of the milling cutter device 13 in the X-axis direction; the support seat 12 moves up and down along the Z-axis direction on the third slide rail 11, In order to realize the position adjustment of the milling cutter device 13 in the Z-axis direction.

Further, when the present invention processes the PCD hole or the valve core hole of the wheel hub 40, first, the tool turret 1 5 moves left and right along the X-axis direction on the first slide rail 4, and adjusts the milling-turning compound electric spindle 9 in the X-axis direction. The upper position of the milling-turning compound electric spindle 9 can be moved to the position corresponding to the position to be drilled; then, the torque motor 6 drives the swing head 7 to rotate circumferentially along the B-axis direction, so that the output of the milling-turning compound electric spindle 9 The inclination angle of the shaft and the tool can be consistent with the inclination angle of the PCD hole or the valve core hole; finally, the milling-turning compound electric spindle 9 moves downward along the W-axis direction on the second slide rail 8, so that the tool can feed and drill hole work.

In order to ensure the rigidity of the overall system of the present invention, improve the machining accuracy of drilling, turning and milling, and the smoothness of the machined surface, the swing head 7, the vertical high-torque motorized spindle 2 and the milling-turning composite motorized spindle 9 are all provided with an arm brake device.

Among them, the connection position relationship between the swing head 7 and the holding brake device is: the holding brake device is surrounded on the rear end of the swing head 7, and is fixedly connected with the turret 1 5 through the bracket. When the torque motor 6 drives the swing head 7 along the B axis After the adjustment of the direction and the circumferential rotation is completed, the swing head 7 can be kept fixed with the turret 1 5 through the holding brake device, so as to ensure that the inclination angle of the milling-turning composite electric spindle 9 can be kept the same when it moves up and down along the W-axis direction, which improves the machining process. The accuracy and finish of the holes;

The milling-turning composite electric spindle 9 can have its output shaft fixedly connected with the tool through the holding brake device, which effectively improves the stability of drilling or turning and milling.

The vertical high-torque motorized spindle 2 can be fixed with the machine tool 1 through the holding brake device, that is, after the vertical high-torque motorized spindle 2 rotates along the C-axis to adjust the processing position of the hub 40, the holding brake device ensures that the wheel hub 40 is not locked. It can be kept fixed during turning, milling or drilling to ensure machining accuracy;

At the same time, the holding brake device can be fixed on the front end of the vertical high-torque motorized spindle 2, and the vertical high-torque motorized spindle 2 has better holding brake rigidity and is suitable for large-diameter machining.

Of course, the brake device can also be fixed on the rear end of the vertical high-torque motorized spindle 2. Compared with the above-mentioned setting method, the vertical high-torque motorized spindle 2 in this position has a slightly weaker brake rigidity, which is suitable for For small aperture processing.

Further, the brake device can adopt the common brake structure in the prior art; and in this embodiment, the specific structure adopted by the brake device is: the brake device includes an elastic cylinder 14, which is sleeved on the elastic cylinder The piston 15 on the 14 and the piston cylinder 16 sleeved on the piston 15, the inner wall of the piston cylinder 16 is provided with an annular chute 17, and the outer wall of the piston 15 is provided with a snap ring 18 that can slide up and down in the annular chute 17 , and the snap ring 18 separates the annular chute 17 up and down into an upper hydraulic chamber 19 and a lower hydraulic chamber 20. The upper port of the elastic cylinder 14 is provided with a number of elastic notches 21 that are evenly distributed around the circumference. The outer wall of the upper end is an outer conical surface that is wide at the top and narrow at the bottom, and the inner wall of the upper end of the piston 15 is provided with an inner conical surface that matches the outer conical surface.

Among them, the elastic cylinder 14 is sleeved on the rear end of the swing head 7 or on the milling-turn composite electric spindle 9 or the vertical high-torque electric spindle 2, the piston cylinder 16 is composed of an upper cylinder base 22 and a lower cylinder base 23, and the upper cylinder base 22 and the The lower cylinder seat 23 is assembled up and down and is formed with the above-mentioned annular chute 17. The oil pressure of the upper hydraulic chamber 19 and the lower hydraulic chamber 20 is adjusted by the oil pump, so that the snap ring 18 and the piston 15 can move up or down. Then, by means of the matching relationship between the outer cone surface of the elastic cylinder 14 and the inner cone surface of the piston 15, the elastic cylinder 14 and the corresponding parts are tightly fixed or loosely separated.

Further, the turret one 5 is driven by the first drive mechanism on the first slide rail 4 to move left and right along the X-axis direction, and the milling-turn composite electric spindle 9 is driven on the second slide rail 8 by the second drive mechanism along the W axis. The axis direction moves up and down, the turret 2 10 is driven by the third drive mechanism on the first slide rail 4 to move left and right along the X axis direction, the support base 12 is driven on the third slide rail 11 by the fourth drive mechanism along the Z axis The direction moves up and down. At the same time, in order to achieve a high degree of mechanical automation, fast processing efficiency and high processing accuracy of the present invention, the first driving mechanism, the torque motor 6, the second driving mechanism, the third driving mechanism and the fourth driving mechanism should all be controlled by the control assembly. control.

In this embodiment, the first driving mechanism is implemented as follows: the first driving mechanism includes a first numerically controlled motor 24 fixed on the fixed base 3 , and the output shaft of the first numerically controlled motor 24 passes through a coupling A first driving screw 25 is connected, and a first driving nut 26 is threadedly connected to the first driving screw 25 , and the first driving nut 26 is fixedly connected with the turret one 5 .

Of course, the first driving mechanism can also adopt other prior art structures: that is, the first driving mechanism includes a first driving oil cylinder, and the telescopic rod of the first driving oil cylinder is fixedly connected with the turret one 5, so that the first driving oil cylinder is Directly drive the turret one 5 to move left and right along the X-axis direction.

In this embodiment, the implementation of the second driving mechanism is as follows: the second driving mechanism includes a second numerically controlled motor 27 fixed on the swing head 7 , and the output shaft of the second numerically controlled motor 27 is connected with a coupling through a coupling. The second driving screw 28 is screwed with a second driving nut 29 , and the second driving nut 29 is fixedly connected with the milling-turning composite electric spindle 9 .

In addition, with the same working principle as the above-mentioned first driving mechanism, the second driving mechanism can also adopt other prior art structures: that is, the second driving mechanism includes a second driving oil cylinder, the telescopic rod of the second driving oil cylinder and the turret A 5 is fixedly connected, so that the milling-turning compound electric spindle 9 is directly driven by the second driving oil cylinder to move up and down along the W-axis direction.

In this embodiment, the implementation of the third driving mechanism is as follows: the third driving mechanism includes a third numerically controlled motor 30 fixed on the fixed base 3 , and the output shaft of the third numerically controlled motor 30 passes through a coupling A third driving screw 31 is connected, a third driving nut 32 is threadedly connected to the third driving screw 31 , and the third driving nut 32 is fixedly connected with the second turret 10 . Similarly, the third driving mechanism may also adopt other prior art structures: that is, the third driving mechanism includes a third driving oil cylinder, and the telescopic rod of the third driving oil cylinder is fixedly connected to the second turret 10 .

In this embodiment, the implementation of the fourth driving mechanism is as follows: the fourth driving mechanism includes a fourth numerically controlled motor 33 fixed on the second turret 10, and the output shaft of the fourth numerically controlled motor 33 is connected by a coupling There is a fourth driving screw 34 , a fourth driving nut 35 is threadedly connected to the fourth driving screw 34 , and the fourth driving nut 35 is fixedly connected with the support base 12 . Similarly, the fourth driving mechanism may also adopt other prior art structures: the fourth driving mechanism includes a fourth driving oil cylinder, and the telescopic rod of the fourth driving oil cylinder is fixedly connected to the second turret 10 .

In order to prevent the iron scraps generated by processing from splashing into the first slide rail 4, and thus seriously affecting the displacement accuracy of the milling-turn composite electric spindle 9 and the milling cutter device 13 moving left and right along the X-axis direction, the machine tool 1 is provided with a peripheral Chassis shell 36, between the turret one 5 and the chassis shell 36, between the turret one 5 and the turret two 10, and between the turret two 10 and the chassis shell 36, a retractable organ-type protective cover 37 is provided , and the organ-type protective cover 37 isolates the first slide rail 4 from the vertical high-torque electric spindle 2 in the front and rear. When the turret one 5 and the turret two 10 move left and right along the X-axis direction, the organ-type protective covers 37 on both sides can be driven to fold and contract or stretch and open accordingly.

At the same time, in order to prevent the iron scraps generated by processing from splashing into the second slide rail 8, and thus seriously affecting the displacement accuracy of the milling-turning composite electric spindle 9 moving up and down along the W-axis direction, the front side cover of the swing head 7 is provided with The main cover body 38, a working space is formed between the main cover body 38 and the swing head 7, the second slide rail 8 and the milling-turning compound electric spindle 9 are both located in the working space, and the main cover body 38 is provided with a milling-turning compound electric spindle. The window corresponding to the position of the output end of the electric spindle 9, the milling-turning compound electric spindle 9 moves downward along the W-axis direction on the second slide rail 8, and drives the output end of the milling-turning compound electric spindle 9 and the tool to pass through the window outwards to the outside of the main cover 38 .

Further, in order to prevent the iron filings generated by processing from entering the working space from the gap between the milling-turning composite electric spindle 9 and the window, the output end of the milling-turning composite electric spindle 9 is sheathed with a sub-cover body 39, The auxiliary cover body 39 corresponds to the structure of the window, and the auxiliary cover body 39 and the window are in a sliding connection, that is, the second slide rail 8 is separated from the outside and the outside by the mating connection between the main cover body 38 and the auxiliary cover body 39 .

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of implementation of the present invention. Therefore: all equivalent changes made according to the shape, structure and principle of the present invention should be covered by the present invention. within the scope of protection.

Claims (10)

1. A vertical turning-milling compound machining machine tool, comprising a machine tool (1), a vertical high-torque motorized spindle (2) for fixing a workpiece is arranged on the machine tool (1) along a Z-axis direction, and a vertical high-torque motorized spindle (2) A fixed base (3) is provided on the machine tool (1) behind the vertical high-torque electric spindle (2), which can rotate along the C-axis circumferential direction, and is characterized in that: the fixed base (3) A turret one (5) is provided on the turret, the turret one (5) can move left and right along the X-axis direction, and the turret one (5) is provided with a torque motor (6) whose output shaft is arranged along the Y-axis direction, and the torque motor ( 6) A swing head (7) is fixed on the output shaft, and the swing head (7) is driven by the torque motor (6) to swing circumferentially along the B-axis direction, and the swing head (7) is provided with an output shaft arranged along the W-axis direction. The milling-turning compound electric spindle (9) is provided, and the milling-turning compound electric spindle (9) can move up and down along the W-axis direction, and the output shaft of the milling-turning compound electric spindle (9) is fixed on the output shaft for turning milling or drilling the workpiece. tool. 2. A vertical turning-milling compound machining machine according to claim 1, characterized in that: the fixed base (3) is provided with a turret two (10), the turret two (10) can be along the X The axial direction moves left and right, a support seat (12) is arranged on the turret two (10), and the support seat (12) can move up and down along the Z-axis direction, and the support seat (12) is provided with a milling machine for turning and milling the workpiece. Knife device (13). 3. A vertical turning-milling compound machine tool according to claim 2, characterized in that: the fixed base (3) is provided with a first slide rail (4) along the X-axis direction, a turret ( 5) and the second turret (10) is slidingly connected with the first slide rail (4). 4. A vertical turning-milling compound machining machine tool according to claim 1, characterized in that: the milling-turning compound electric spindle (9) is provided with a second slide rail (8) along the W-axis direction, and the swing head (7) is slidably connected with the second slide rail (8). 5. A vertical turning-milling compound machining machine according to claim 2, characterized in that: a third slide rail (11) is provided on the second turret (10) along the Z-axis direction, and a support seat (12) ) is slidably connected with the third slide rail (11). 6. A vertical turning-milling composite machining machine tool according to claim 1, characterized in that: on the swing head (7), the vertical high-torque motorized spindle (2) and the milling-turning composite motorized spindle (9) All are equipped with a holding brake device. 7. A vertical turning-milling compound machining machine according to claim 6, wherein the holding brake device comprises an elastic cylinder (14), a piston (15) sleeved on the elastic cylinder (14), and a piston cylinder (16) sleeved on the piston (15), the inner wall of the piston cylinder (16) is provided with an annular chute (17), and the outer wall of the piston (15) is provided with an annular chute (17) The snap ring (18) slides up and down, and the snap ring (18) divides the annular chute (17) up and down into an upper hydraulic chamber (19) and a lower hydraulic chamber, and the upper port of the elastic cylinder (14) is provided with A plurality of elastic notches (21) are evenly distributed around the circumference, the outer wall of the upper end of the elastic cylinder (14) is an outer conical surface that is wide in the upper part and narrow in the bottom, and the inner wall of the upper end of the piston (15) is provided with an inner conical surface that matches the outer conical surface. . 8. A vertical turning-milling compound machining machine according to claim 2, characterized in that: the machine tool (1) is provided with a casing (36) on the periphery, and the turret one (5) is connected to the casing. A retractable organ-type protective cover (37) is provided between (36), between the turret one (5) and the turret two (10), and between the turret two (10) and the chassis shell (36), And the organ-type protective cover (37) isolates the first slide rail (4) from the vertical high-torque electric spindle (2) in the front and rear. 9. A vertical turning-milling compound machining machine according to claim 1, characterized in that: the front side cover of the swing head (7) is provided with a main cover body (38), and the main cover body (38) is connected with the main cover body (38). A working space is formed between the swing heads (7), the second sliding rail (8) and the milling-turning compound electric spindle (9) are both located in the working space, and the main cover (38) is provided with a milling-turning compound electric spindle The window corresponding to the position of the output end of (9), the milling-turning compound electric spindle (9) moves down along the W-axis direction on the second slide rail (8), and drives the output end of the milling-turning compound electric spindle (9) and The knives are passed outward through the window to the outside of the main housing (38). 10. A vertical turning-milling compound machining machine according to claim 9, characterized in that: the output end of the milling-turning compound electric spindle (9) is sleeved with an auxiliary cover body (39), and the auxiliary cover body (39) corresponds to the structure of the window, and the auxiliary cover body (39) and the window are slidingly connected.

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