Multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously

Abstract

The invention relates to the technical field of turning, in particular to a multi-spindle numerical control machine tool capable of machining a plurality of workpieces simultaneously, which comprises a machine tool main body, a lifting block is mounted on one side of the upper surface of the machine tool main body through a lifting mechanism, and L-shaped plates are fixedly embedded in two sides of the upper surface of the lifting block respectively; a moving plate extending upwards is fixedly installed on one side of the lifting block, a rotating block is rotationally connected between the upper ends of the two L-shaped plates, rotating rods are fixedly connected to the two ends of the front surface of the rotating block correspondingly, a lifting mechanism is arranged at the front end of the position between the two rotating rods, and a plurality of transverse fixing rods are fixedly connected to the surface of one side of the moving plate. According to the shaft workpiece unloading device, shaft workpieces can be unloaded one by one, the problem of mutual scraping and collision in the unloading process is effectively avoided, damage is avoided, loading and unloading of the next batch of shaft workpieces can be carried out synchronously while one batch of shaft workpieces are unloaded, and the machining efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of turning, and particularly relates to a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously. Background Art

[0002] The motor output shaft is the core part of the motor. Its machining accuracy directly affects the running stability and transmission efficiency of the motor. It has a high degree of automation and stable accuracy, and is suitable for mass-producing motor output shaft workpieces.

[0003] In the prior art, the end of the shaft workpiece is fixed by a three-jaw chuck for turning. When machining multiple shaft workpieces, after the shaft workpiece is machined, it needs to be unloaded one by one and then installed. The unloading and loading need to be carried out step by step in sequence, which takes a long time. At the same time, during the unloading process, in order to ensure that the shaft workpieces do not scratch and wear each other, they need to be removed and moved away from the three-jaw chuck one by one, which also increases the unloading time. Therefore, a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously is proposed. Summary of the Invention

[0004] The purpose of the present invention is to solve the disadvantages in the background art, and a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously is proposed.

[0005] To achieve the above object, the technical solution adopted by the present invention is: a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously, including a machine tool main body. On one side of the upper surface of the machine tool main body, a lifting block is installed through a lifting mechanism. On both sides of the upper surface of the lifting block, L-shaped plates are fixedly embedded respectively. On one side of the lifting block, a moving plate extending upward is fixedly installed. Between the upper ends of the two L-shaped plates, a rotating block is rotatably connected. At both ends of the front surface of the rotating block, rotating rods are fixedly connected respectively. Between the two rotating rods, a lifting mechanism is arranged at the front end. On one side surface of the moving plate, a plurality of horizontal fixing rods are fixedly connected. On the outer surface of each horizontal fixing rod, two connecting rods are fixedly connected. The adjacent connecting rods in the front-back direction are fixedly connected with inclined guide rods at the closer ends respectively. The lower end of the inclined guide rod contacts the upper surface of the rotating rod. On the other side of the upper surface of the machine tool main body, a plurality of workpiece feeding mechanisms are arranged. On the upper surface of the machine tool main body, a multi-axis tool body mechanism is arranged.

[0006] Preferably, the lifting mechanism includes a lifting plate fixedly installed on one side surface of the lifting block. The lower surface of the lifting plate is fixedly connected with the telescopic end of a hydraulic cylinder. The lower end of the hydraulic cylinder is fixedly installed on the upper surface of the machine tool main body. The lower surface of the lifting block is fixedly connected with a guide post. The lower end of the guide post is slidably sleeved with a guide cylinder. The lower end of the guide cylinder is fixedly connected to the upper surface of the machine tool main body. The upper surface of the lifting block is provided with an inclined surface.

[0007] Preferably, the multi-axis tool body mechanism includes a fixed side plate fixedly connected to the upper surface of the machine tool main body. The moving plate is slidably attached to the fixed side plate. A sliding opening is formed at the lower end of the side surface of the fixed side plate. The lifting plate slidably passes through the inside of the sliding opening. A top connecting plate is fixedly connected to the upper side of the fixed side plate. One end of the top connecting plate is provided with a plurality of servo feed mechanisms.

[0008] Preferably, the upper ends of the two L-shaped plates are fixedly connected to a connecting plate together. The rotating block is rotatably installed on the front surface of the connecting plate. One end of the connecting plate is fixedly connected to the side surface of the moving plate.

[0009] Preferably, the servo feed mechanism includes a vertical rail fixedly installed at one end of the top connecting plate. A vertical sliding table is slidably clamped on one side surface of the vertical rail. A vertical lead screw is rotatably installed inside the vertical rail. The upper end of the vertical lead screw is fixedly connected to the output shaft of a first servo motor, and the first servo motor is fixedly installed at the upper end of the vertical rail. A second servo motor is fixedly installed on one side surface of the vertical sliding table. The output shaft of the second servo motor is fixedly installed with a turning tool bit.

[0010] Preferably, two reinforcing sleeves are fixedly connected to the outer surface of the horizontal fixing rod. Each reinforcing sleeve is fixedly sleeved on the outer surface of the connecting rod.

[0011] Preferably, the feeding mechanism includes a plurality of horizontal sliding tables slidably connected to the upper surface of the machine tool main body. A driving motor is fixedly installed on the upper surface of the horizontal sliding table. The output shaft of the driving motor is fixedly installed with a three-jaw chuck. A distance adjusting mechanism is arranged on the lower surface of the horizontal sliding table.

[0012] Preferably, the distance adjusting mechanism includes a horizontal lead screw rotatably installed on the upper surface of the machine tool main body. The horizontal lead screw threadedly penetrates through the inside of the horizontal sliding table. One end of the horizontal lead screw is fixedly connected to the output shaft of an adjusting motor. The lower end of the adjusting motor is fixedly installed on the upper surface of the machine tool main body. A protective shell is installed on the upper surface of the machine tool main body and near the outer sides of a plurality of adjusting motors.

[0013] Preferably, the lifting mechanism includes an upper cross bar fixedly connected to the front ends between two rotating rods. The telescopic end of a telescopic rod is rotatably connected to the outer surface of the upper cross bar. The lower end of the telescopic rod is rotatably connected to a bottom cross bar. The two ends of the bottom cross bar are respectively fixedly connected to the side surfaces of the L-shaped plates.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. After processing a batch of shaft workpieces, when the three-jaw chuck is loosened, the shaft workpieces fall onto the surface of the rotating rod. At the same time, each shaft workpiece is located between two inclined guide rods. Then, the transverse lead screw rotates to control the cross slide to move away from the shaft workpiece, facilitating the operator to reload the next batch of shaft workpieces. Meanwhile, the telescopic rod contracts, driving the upper cross bar to move downward, and the two rotating rods and the rotating blocks rotate downward simultaneously. During the downward rotation, the distance between the lower end of the frontmost inclined guide rod and the surface of the rotating rod is the largest, causing the shaft workpiece to fall first. The adjacent shaft workpiece behind is blocked because the distance between the lower end of the inclined guide rod and the rotating rod is smaller. As the rotating rod continues to rotate downward, the adjacent shaft workpiece behind will fall, thus discharging the shaft workpieces one by one, effectively avoiding the problem of mutual scratching and collision during the unloading process and preventing damage.

[0015] 2. After turning processing, when unloading a batch of shaft workpieces, the present invention can load the next batch of shaft workpieces simultaneously. The synchronous loading and unloading effectively improve the processing efficiency.

[0016] 3. Since the rotating rod, the inclined guide rod, and the connecting rod are all rod-shaped structures, during the turning process, the chips generated can slide down on their surfaces, avoiding the problem of chip accumulation. After the chips fall on the inclined surface, they will slide to the upper surface of the machine tool body. When unloading the shaft workpieces, the shaft workpieces slide in front of the machine tool body, separated from the chip falling position, ensuring that the shaft workpieces are unloaded without carrying chips. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 2 is a Figure 1 magnified view of part A in a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 3 is a schematic diagram of the moving plate of a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 4 is a schematic diagram of the lifting mechanism of a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 5 is a Figure 4 magnified view of part B in a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 6 is a schematic diagram of the multi-axis tool body mechanism of a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 7 is a schematic diagram of the feeding mechanism of a multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to the present invention; Figure 8 Schematic diagram during the machining of a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously according to the present invention; Figure 9 Front view during the machining of a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously according to the present invention; Figure 10 Partial view during the unloading of a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously according to the present invention.

[0018] Wherein: 1, machine tool main body; 2, fixed side plate; 3, lifting block; 4, inclined surface; 5, sliding opening; 6, lifting plate; 7, hydraulic cylinder; 8, guide cylinder; 9, guide post; 10, L-shaped plate; 11, bottom cross bar; 12, telescopic rod; 13, rotating rod; 14, horizontal fixing bar; 15, reinforcing sleeve; 16, connecting rod; 17, inclined guide rod; 18, connecting plate; 19, rotating block; 20, top contact plate; 21, vertical rail; 22, vertical lead screw; 23, first servo motor; 24, vertical sliding table; 25, second servo motor; 26, turning tool bit; 27, horizontal sliding table; 28, driving motor; 29, three-jaw chuck; 30, horizontal lead screw; 31, adjusting motor; 32, protective shell; 33, upper cross bar; 34, moving plate; 35, shaft workpiece; 36, turning surface. Specific embodiments

[0019] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0020] As Figures 1 - 10 shown, a multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously includes a machine tool main body 1. One side of the upper surface of the machine tool main body 1 is provided with a lifting block 3 through a lifting mechanism. On both sides of the upper surface of the lifting block 3, L-shaped plates 10 are fixedly embedded respectively. One side of the lifting block 3 is fixedly installed with a moving plate 34 extending upward. Between the upper ends of the two L-shaped plates 10, a rotating block 19 is rotatably connected. At both ends of the front surface of the rotating block 19, rotating rods 13 are fixedly connected respectively. It should be noted that the two rotating rods 13 are designed with different heights to ensure that when receiving the shaft workpiece 35, the shaft workpiece 35 can be kept as horizontal as possible. A lifting mechanism is arranged at the front end between the two rotating rods 13. One side surface of the moving plate 34 is fixedly connected with a plurality of horizontal fixing bars 14. On the outer surface of each horizontal fixing bar 14, two connecting rods 16 are fixedly connected. The adjacent ends of the connecting rods 16 in the front-rear direction are fixedly connected with inclined guide rods 17 respectively. The lower ends of the inclined guide rods 17 contact the upper surfaces of the rotating rods 13. A plurality of workpiece feeding mechanisms are arranged on the other side of the upper surface of the machine tool main body 1. A multi-axis tool body mechanism is arranged on the upper surface of the machine tool main body 1.

[0021] As Figure 1 、 Figure 2, Figure 3 , Figure 4 As shown in Figure 3 and Figure 4 , the lifting mechanism includes a lifting plate 6 fixedly installed on one side surface of the lifting block 3. The lower surface of the lifting plate 6 is fixedly connected to the telescopic end of a hydraulic cylinder 7. The lower end of the hydraulic cylinder 7 is fixedly installed on the upper surface of the machine tool body 1. A guide post 9 is fixedly connected to the lower surface of the lifting block 3. The lower end of the guide post 9 is slidably sleeved with a guide cylinder 8. The lower end of the guide cylinder 8 is fixedly connected to the upper surface of the machine tool body 1. An inclined surface 4 is provided on the upper surface of the lifting block 3. By the telescoping of the hydraulic cylinder 7, the height of the lifting plate 6 can be adjusted to change the distance between the rotating rod 13 and the shaft workpiece 35, preventing the distance from being too small and affecting the turning process, or preventing the distance from being too large and causing too much impact force when the shaft workpiece 35 falls and collides with the rotating rod 13. When the lifting block 3 moves up and down, the guide post 9 slides along the inner side of the guide cylinder 8 to ensure the stable movement of the lifting block 3.

[0022] As Figure 1 , Figure 6 As shown in Figure 1 and Figure 6 , the multi-axis tool body mechanism includes a fixed side plate 2 fixedly connected to the upper surface of the machine tool body 1. A moving plate 34 is slidably attached to the fixed side plate 2. A sliding opening 5 is provided at the lower end of the side surface of the fixed side plate 2. The lifting plate 6 slidably passes through the inside of the sliding opening 5. A top plate 20 is fixedly connected to the upper edge of the fixed side plate 2. One end of the top plate 20 is provided with a number of servo feed mechanisms. The design of the sliding opening 5 can improve the stability of the up and down movement of the lifting plate 6. The moving plate 34 is attached to the fixed side plate 2, which can cover the part of the sliding opening 5 above the lifting block 3 to prevent metal chips from leaking through the sliding opening 5.

[0023] As Figure 4 , Figure 5 As shown in Figure 4 and Figure 5 , the upper ends of two L-shaped plates 10 are jointly fixedly connected to a connecting plate 18. A rotating block 19 is rotatably installed on the front surface of the connecting plate 18. One end of the connecting plate 18 is fixedly connected to the side surface of the moving plate 34. The two end faces of the rotating block 19 are provided with rotating shafts, and the rotating block 19 and the connecting plate 18 are rotationally matched by the rotating shafts passing through the side surface of the connecting plate 18.

[0024] As Figure 6As shown in the figure, the servo feed mechanism includes a vertical rail 21 fixedly installed at one end of the top contact plate 20. A vertical sliding table 24 is slidably clamped on one side surface of the vertical rail 21. A vertical lead screw 22 is rotatably installed inside the vertical rail 21. The upper end of the vertical lead screw 22 is fixedly connected to the output shaft of the first servo motor 23, and the first servo motor 23 is fixedly installed at the upper end of the vertical rail 21. A second servo motor 25 is fixedly installed on one side surface of the vertical sliding table 24, and a turning tool head 26 is fixedly installed on the output shaft of the second servo motor 25. Driven by the first servo motor 23, the vertical lead screw 22 rotates, and then the vertical sliding table 24 moves up or down to adjust the height of the turning tool head 26. By the operation of the second servo motor 25, the turning tool head 26 rotates to change the angle when the turning tool head 26 turns the shaft workpiece 35.

[0025] As Figure 4 , Figure 5 shown in the figure, two reinforcing sleeves 15 are fixedly connected to the outer surface of the horizontal fixing rod 14, and each reinforcing sleeve 15 is fixedly sleeved on the outer surface of the connecting rod 16. The reinforcing sleeve 15 improves the connection stability between the horizontal fixing rod 14 and the connecting rod 16.

[0026] As Figure 7 shown in the figure, the feeding mechanism includes a plurality of horizontal sliding tables 27 slidably connected to the upper surface of the machine tool body 1. A driving motor 28 is fixedly installed on the upper surface of the horizontal sliding table 27, and a three-jaw chuck 29 is fixedly installed on the output shaft of the driving motor 28. A distance adjusting mechanism is arranged on the lower surface of the horizontal sliding table 27. The three-jaw chuck 29 is a prior art and can stably clamp the shaft workpiece 35 for turning processing.

[0027] The distance adjusting mechanism includes a horizontal lead screw 30 rotatably installed on the upper surface of the machine tool body 1. The horizontal lead screw 30 threadedly penetrates through the inside of the horizontal sliding table 27. One end of the horizontal lead screw 30 is fixedly connected to the output shaft of the adjusting motor 31, and the lower end of the adjusting motor 31 is fixedly installed on the upper surface of the machine tool body 1. A protective shell 32 is installed on the upper surface of the machine tool body 1 and near the outside of a plurality of adjusting motors 31. The protective shell 32 plays a role in protecting the adjusting motor 31. When the adjusting motor 31 operates, the horizontal lead screw 30 rotates, and then the horizontal sliding table 27 moves horizontally to make the shaft workpiece 35 move horizontally to cooperate with the turning tool head 26 for processing.

[0028] As Figure 4 shown in the figure, the lifting mechanism includes an upper cross bar 33 fixedly connected to the front end between two rotating rods 13. The telescopic end of the telescopic rod 12 is rotatably connected to the outer surface of the upper cross bar 33. The lower end of the telescopic rod 12 is rotatably connected to a bottom cross bar 11, and both ends of the bottom cross bar 11 are respectively fixedly connected to the side surfaces of the L-shaped plates 10. The two ends of the telescopic rod 12 both adopt the scheme of rotatably connecting other components to ensure that there will be no jamming problem during the telescopic process.

[0029] When assembling the shaft workpiece 35, as Figure 7 , Figure 8 shown, one end of the shaft workpiece 35 is clamped by the three-jaw chuck 29. During machining, by adjusting the motor 31 to drive the transverse lead screw 30 to rotate, the cross slide 27 is moved towards one side. At the same time, through the operation of the first servo motor 23, the vertical slide 24 is controlled to move vertically, and the second servo motor 25 operates to adjust the angle of the turning tool head 26. Through the adjustment of the above multiple degrees of freedom, the shaft workpiece 35 can move horizontally, and at the same time, the turning tool head 26 above can move up and down and rotate the angle to feed the tool flexibly. Multiple shaft workpieces 35 can be simultaneously turned to form a turning surface 36, effectively improving the turning processing efficiency.

[0030] After machining a batch of shaft workpieces 35, after loosening the three-jaw chuck 29, the shaft workpiece 35 falls onto the surface of the rotating rod 13. At the same time, each shaft workpiece 35 is located between two inclined guide rods 17. Then the transverse lead screw 30 rotates to control the cross slide 27 to move away from the shaft workpiece 35 to facilitate the operator to reload the next batch of shaft workpieces 35. At the same time, the telescopic rod 12 contracts, driving the upper cross bar 33 to move downward, and the two rotating rods 13 and the rotating block 19 rotate downward at the same time. During the downward rotation, the distance between the lower end of the frontmost inclined guide rod 17 and the surface of the rotating rod 13 is the largest, and the shaft workpiece 35 is preferentially dropped, while the adjacent shaft workpiece 35 at the rear is blocked because the distance between the lower end of the inclined guide rod 17 and the rotating rod 13 is smaller. The state is as Figure 10 shown. Then, as the rotating rod 13 continues to rotate downward, the adjacent shaft workpiece 35 at the rear will fall, and the shaft workpiece 35 can be unloaded one by one in this way, effectively avoiding the problem of mutual scratching during the unloading process and preventing damage.

[0031] Since the overall radial size of the turning surface 36 decreases after machining, therefore, the two rotating rods 13 are designed with different heights, as Figure 9 shown, to ensure that the shaft workpiece 35 remains as horizontal as possible when the three-jaw chuck 29 is released, so as to ensure that it can slide smoothly downward and be conveyed after the two rotating rods 13 rotate downward later.

[0032] Since the rotating rod 13, the inclined guide rod 17 and the connecting rod 16 are all rod-shaped structures, therefore, the chips generated during the turning process can slide and fall on their surfaces, avoiding the problem of chip accumulation. After the chips fall on the inclined surface 4, they will slide to the upper surface of the machine tool body 1. When unloading the shaft workpiece 35, the shaft workpiece 35 slides in front of the machine tool body 1, separated from the chip dropping position, ensuring that the shaft workpiece 35 is not taken down together with the chips during unloading.

[0033] 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, and what is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, various changes and improvements will occur to the present invention, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-spindle numerical control machine tool capable of machining multiple workpieces simultaneously, including a machine tool body (1), characterized in that: On one side of the upper surface of the machine tool main body (1), a lifting block (3) is installed through a lifting mechanism. On both sides of the upper surface of the lifting block (3), L-shaped plates (10) are fixedly embedded respectively. On one side of the lifting block (3), a moving plate (34) extending upward is fixedly installed. Between the upper ends of the two L-shaped plates (10), a rotating block (19) is rotatably connected. At both ends of the front surface of the rotating block (19), rotating rods (13) are fixedly connected respectively. A lifting mechanism is arranged at the front end between the two rotating rods (13). On one side surface of the moving plate (34), a plurality of horizontal fixing rods (14) are fixedly connected. On the outer surface of each horizontal fixing rod (14), two connecting rods (16) are fixedly connected. The adjacent connecting rods (16) in the front-back direction are fixedly connected with inclined guide rods (17) at their adjacent ends respectively. The lower end of the inclined guide rod (17) contacts the upper surface of the rotating rod (13). On the other side of the upper surface of the machine tool main body (1), a plurality of feeding mechanisms are arranged. On the upper surface of the machine tool main body (1), a multi-axis tool body mechanism is arranged.

2. The multi-spindle CNC machine tool capable of simultaneously machining multiple workpieces according to claim 1, characterized in that: The lifting mechanism includes a lifting plate (6) fixedly installed on one side surface of the lifting block (3). The telescopic end of a hydraulic cylinder (7) is fixedly connected to the lower surface of the lifting plate (6). The lower end of the hydraulic cylinder (7) is fixedly installed on the upper surface of the machine tool main body (1). A guide post (9) is fixedly connected to the lower surface of the lifting block (3). The lower end of the guide post (9) is slidably sleeved with a guide cylinder (8). The lower end of the guide cylinder (8) is fixedly connected to the upper surface of the machine tool main body (1). An inclined surface (4) is opened on the upper surface of the lifting block (3).

3. A multi-spindle CNC machine tool capable of simultaneously machining multiple workpieces according to claim 2, characterized in that: The multi-axis tool body mechanism includes a fixed side plate (2) fixedly connected to the upper surface of the machine tool main body (1). The moving plate (34) is in sliding contact with the fixed side plate (2). A sliding opening (5) is opened at the lower end of the side surface of the fixed side plate (2). The lifting plate (6) slides through the inside of the sliding opening (5). A top plate (20) is fixedly connected to the upper edge of the fixed side plate (2). A plurality of servo feed mechanisms are arranged at one end of the top plate (20).

4. A multi-spindle numerical control machine tool capable of simultaneously machining multiple workpieces according to claim 1, characterized in that: The upper ends of the two L-shaped plates (10) are jointly fixedly connected with a connecting plate (18). The rotating block (19) is rotatably embedded in the front surface of the connecting plate (18). One end of the connecting plate (18) is fixedly connected to the side surface of the moving plate (34).

5. A multi-spindle numerical control machine tool capable of simultaneously machining multiple workpieces according to claim 3, characterized in that: The servo feed mechanism includes a vertical rail (21) fixedly installed at one end of the top plate (20). A vertical sliding table (24) is slidably clamped on one side surface of the vertical rail (21). A vertical lead screw (22) is rotatably installed inside the vertical rail (21). The upper end of the vertical lead screw (22) is fixedly connected to the output shaft of a first servo motor (23), and the first servo motor (23) is fixedly installed at the upper end of the vertical rail (21). A second servo motor (25) is fixedly installed on one side surface of the vertical sliding table (24). The output shaft of the second servo motor (25) is fixedly installed with a turning tool bit (26).

6. A multi-spindle CNC machine tool capable of simultaneously machining multiple workpieces according to claim 1, characterized in that: Two reinforcing sleeves (15) are fixedly connected to the outer surface of the horizontal fixing rod (14), and each reinforcing sleeve (15) is fixedly sleeved on the outer surface of the connecting rod (16).

7. A multi-spindle CNC machine tool capable of machining multiple workpieces simultaneously, characterized in that: The feeding mechanism includes a plurality of horizontal sliding tables (27) slidably connected to the upper surface of the machine tool main body (1). A driving motor (28) is fixedly installed on the upper surface of the horizontal sliding table (27). A three-jaw chuck (29) is fixedly installed on the output shaft of the driving motor (28). A distance adjusting mechanism is arranged on the lower surface of the horizontal sliding table (27).

8. A multi-spindle CNC machine tool capable of simultaneously machining multiple workpieces according to claim 7, characterized in that: The distance adjusting mechanism includes a horizontal lead screw (30) rotatably installed on the upper surface of the machine tool main body (1). The horizontal lead screw (30) threadedly penetrates through the inside of the horizontal sliding table (27). One end of the horizontal lead screw (30) is fixedly connected to the output shaft of an adjusting motor (31). The lower end of the adjusting motor (31) is fixedly installed on the upper surface of the machine tool main body (1). A protective housing (32) is installed on the upper surface of the machine tool main body (1) and near the outer sides of a plurality of adjusting motors (31).

9. A multi-spindle numerical control machine tool capable of simultaneously processing multiple workpieces according to claim 1, characterized in that: The lifting mechanism includes an upper cross bar (33) fixedly connected to the front ends between two rotating rods (13). The telescopic end of a telescopic rod (12) is rotatably connected to the outer surface of the upper cross bar (33). The lower end of the telescopic rod (12) is rotatably connected to a bottom cross bar (11). The two ends of the bottom cross bar (11) are respectively fixedly connected to the side surfaces of the L-shaped plates (10).

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