Horizontal turning and milling composite center capable of automatically changing tool

Abstract

The invention discloses a horizontal turning and milling composite center capable of automatically changing tools, which comprises a main body bed and a spindle motor fixedly arranged on the side surface of the main body bed, a workpiece spindle is fixedly arranged at the top of the main body bed, a plurality of belts are arranged between the workpiece spindle and the spindle motor for transmission, and an X-axis bed is slidably arranged at the top of the main body bed through a guide rail; a turning and milling spindle is slidably arranged at the top of the X-axis bed through a guide rail, a vertical frame is fixedly arranged on the side face of the main body bed, a tool magazine motor is fixedly arranged on the side face of the vertical frame, a fixing support is fixedly arranged on the side face of the vertical frame, and a milling tool spindle and a turning tool spindle are fixed to the turning and milling spindle in a penetrating mode. A plurality of tools are arranged on the fixing support, turning tools and milling tools can be alternately replaced in the same tool magazine and are not limited by stations, each station of the tool magazine can be installed at will, a tool claw of the tool magazine is provided with a locking mechanism, the phenomenon that the tools are large and fly-cutter is caused can be avoided, and the size of a machine tool can be greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of turning and milling, and particularly relates to a horizontal turning and milling compound center with automatic tool changing. Background Art

[0002] A lathe is a machine tool mainly used for turning a rotating workpiece with a turning tool. Drills, reamers, broaches, taps, threading dies, knurling tools, etc. can also be used for corresponding processing on the lathe; However, the machine tools in the prior art are generally divided into two structures: a power turret and a single-spindle turning and milling. Due to the limitation of the cutting rigidity of the spindle, problems such as the inability to process larger parts occur. Therefore, a horizontal turning and milling compound center with automatic tool changing is needed. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem in the prior art that larger parts cannot be processed, and thus a horizontal turning and milling compound center with automatic tool changing is proposed.

[0004] To achieve the above object, the present invention adopts the following technical scheme: A horizontal turning and milling compound center with automatic tool changing, including a main body bed and a spindle motor fixedly arranged on its side. A workpiece spindle is fixedly arranged on the top of the main body bed. A plurality of belts are arranged between the workpiece spindle and the spindle motor for transmission. An X-axis bed is slidably arranged on the top of the main body bed through a guide rail. A turning and milling spindle is slidably arranged on the top of the X-axis bed through a guide rail. A vertical frame is fixedly arranged on the side of the main body bed. A tool magazine motor is fixedly arranged on the side of the vertical frame. A fixed bracket is fixedly arranged on the side of the vertical frame. A milling cutter spindle and a turning tool spindle are fixedly penetrated through the turning and milling spindle. Tool striking cylinders are arranged at the ends of the milling cutter spindle and the turning tool spindle. A milling spindle motor is fixedly arranged on the turning and milling spindle. A tool magazine motor is fixedly arranged on the side of the fixed bracket. A flipping fixture is fixedly arranged at one end of the workpiece spindle. An X servo motor is fixedly arranged on the X-axis bed. A Z servo motor is fixedly arranged on the top of the main body bed.

[0005] Further preferably, a plurality of rectangular blocks are fixedly arranged on the side of the fixed bracket. A fixing plate is fixedly arranged on the power output end of the tool magazine motor. A driving cylinder is fixedly arranged on the side of the fixing plate. A dial is fixedly arranged at one end of the driving cylinder. A travel switch is fixedly arranged on the side of the driving cylinder through a support plate. A sliding rod is movably penetrated through the middle of the rectangular block. A retaining ring is arranged at the other end of the sliding rod. A convex plate is fixedly arranged at one end of the sliding rod.

[0006] Further preferably, a plurality of strip-shaped blocks are fixedly arranged on the side of the fixed bracket. A short sliding rod is movably penetrated through the middle of the strip-shaped block. A limiting block is fixedly arranged at one end of the short sliding rod. A vertical spring is movably sleeved at one end of the short sliding rod. A plurality of limiting columns and a plurality of through columns are fixedly arranged on the side of the fixed bracket.

[0007] Further preferably, two tool claws are movably arranged on the through column, positioning blocks are fixedly arranged on the side surfaces of the tool claws, a transverse spring is fixedly arranged between the two tool claws, and clamping plates are fixedly arranged at one ends of a plurality of through columns.

[0008] Further preferably, a long screw rod movably penetrates through the tool claw, threaded grooves are formed in the two open ends of the long screw rod, threaded plates are threadedly sleeved on the two ends of the long screw rod through the threaded grooves, and threaded rings are threadedly sleeved on the two ends of the long screw rod through the threaded grooves.

[0009] Further preferably, two movable rings and a separating ring are movably sleeved on the two ends of the long screw rod, movable cylinders are fixedly nested on the two movable rings, spiral grooves are formed in the surfaces of the movable cylinders, and rubber sheets and support sheets are adhesively arranged in the spiral grooves on the surfaces of the movable cylinders.

[0010] Further preferably, the separating ring is located between the movable ring and the threaded ring, the support sheet spirally surrounds the surface of the movable cylinder through the spiral groove, and the rubber sheet spirally surrounds the surface of the movable cylinder through the spiral groove.

[0011] Further preferably, the support sheet is made of rubber, the rubber sheet covers the column support sheet, and the support sheet and the rubber sheet do not contact each other. The spiral directions of the threaded grooves at the two ends of the long screw rod are opposite, and the tool claw is located between the two movable cylinders.

[0012] Further preferably, an arc-shaped notch is arranged on one side of the tool claw, the notches of the two tool claws are matched with the tool, and the spiral directions of the two rubber sheets on the front and back of the tool claw are opposite.

[0013] Further preferably, the tool claw is divided into two. One of the tool claws has a straight claw opening and is movably penetrated by two through columns. The other tool claw has an arc-shaped claw opening and is movably penetrated by the through column. The side surface of the other tool claw abuts against the side surface of the limit column, and two transverse springs abut against the middle of the tool claws.

[0014] The beneficial effects of the present invention are as follows: Multiple cutting tools are provided on the fixed support. The turning tool and the milling cutter can replace tools alternately in the same tool magazine without being restricted by workstations, and each workstation of the tool magazine can be installed arbitrarily. The tool claws of the tool magazine are equipped with a locking mechanism, which can avoid the phenomenon of flying tools caused by large tools, greatly reduce the size of the machine tool, and save manufacturing costs. The tool magazine can be divided into two areas, one is the turning tool area and the other is the milling cutter area. According to the needs of parts, the tool positions can be arbitrarily divided. Each tool position of the tool magazine is provided with a locking mechanism to prevent the tool from flying out. The machine tool is not restricted by tool interference, and for equipment of the same specification, the processing range is the largest. The machine tool has two linear axes, X and Z, which can make the turning and milling spindles move back and forth, left and right. During the process of clamping the workpiece, due to the large stroke of the Z-axis, the Z-axis can be moved to the rightmost end, and there is a large space between the tool and the workpiece spindle, making the operation more convenient. The tool magazine is located at the rear of the machine tool. The turning spindle and the milling spindle can replace tools alternately using the same tool magazine. The turning spindle is fixed, and the milling spindle performs rotary machining to realize the combination of turning and milling. In this way, both the rigidity of the turning spindle and the processing ability of the milling spindle can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the structure of the fixed support of the present invention.

[0017] Figure 3 It is a schematic diagram of the structure of the workpiece spindle of the present invention.

[0018] Figure 4 It is a schematic diagram of the structure of the turning and milling spindle of the present invention Figure 1 .

[0019] Figure 5 It is a schematic diagram of the structure of the turning and milling spindle of the present invention Figure 2 .

[0020] Figure 6 It is a schematic diagram of the structure of the fixed support of the present invention.

[0021] Figure 7 It is a schematic diagram of the structure of the sliding rod of the present invention.

[0022] Figure 8 It is a schematic diagram of the structure of the tool claw of the present invention.

[0023] Figure 9 It is a schematic diagram of the structure of the movable cylinder of the present invention.

[0024] Figure 10 It is a schematic diagram of the structure of the long screw rod of the present invention.

[0025] Figure 11 It is a schematic sectional view of the long screw rod of the present invention.

[0026] In the figure: main body bed 1, main shaft motor 2, belt 3, workpiece main shaft 4, X-axis bed 5, turning and milling main shaft 6, vertical frame 7, X servo motor 8, fixed bracket 9, Z servo motor 10, long screw 11, tool magazine motor 12, milling cutter main shaft 13, turning tool main shaft 14, milling main shaft motor 15, tool clamping cylinder 16, flipping fixture 17, rectangular block 18, strip block 19, fixed plate 20, paddle 21, sliding rod 22, travel switch 23, retaining ring 24, vertical spring 25, limit block 26, limit post 27, horizontal spring 28, positioning block 29, tool claw 30, through column 31, clamping plate 32, threaded plate 33, movable ring 34, movable cylinder 35, separating ring 36, threaded ring 37, threaded groove 38, rubber sheet 39, support sheet 40, driving cylinder 41. Specific implementation mode

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0028] Refer to Figures 1 to 11 , a horizontal turning and milling composite center with automatic tool change, including a main body bed 1 and a main shaft motor 2 fixedly arranged on its side. A workpiece main shaft 4 is fixedly arranged on the top of the main body bed 1. A plurality of belts 3 are arranged between the workpiece main shaft 4 and the main shaft motor 2 for transmission. The X-axis bed 5 is slidably arranged on the top of the main body bed 1 through a guide rail. The turning and milling main shaft 6 is slidably arranged on the top of the X-axis bed 5 through a guide rail. A vertical frame 7 is fixedly arranged on the side of the main body bed 1. A tool magazine motor 12 is fixedly arranged on the side of the vertical frame 7. A fixed bracket 9 is fixedly arranged on the side of the vertical frame 7. A milling cutter main shaft 13 and a turning tool main shaft 14 are penetrated and fixed on the turning and milling main shaft 6. Tool clamping cylinders 16 are arranged at the ends of the milling cutter main shaft 13 and the turning tool main shaft 14. A milling main shaft motor 15 is fixedly arranged on the turning and milling main shaft 6. A tool magazine motor 12 is fixedly arranged on the side of the fixed bracket 9. A flipping fixture 17 is fixedly arranged at one end of the workpiece main shaft 4. An X servo motor 8 is fixedly arranged on the X-axis bed 5. A Z servo motor 10 is fixedly arranged on the top of the main body bed 1; During specific implementation, multiple cutting tools are provided on the fixed support 9. The turning tool and the milling tool can replace tools alternately in the same tool magazine without being restricted by workstations. Each workstation of the tool magazine can be installed arbitrarily. The tool claws of the tool magazine are equipped with a locking mechanism, which can avoid the phenomenon of flying tools caused by large tools, greatly reduce the size of the machine tool, and save manufacturing costs. The tool magazine can be divided into two areas, one is the turning tool area and the other is the milling tool area. The tool positions can be arbitrarily divided according to the needs of the parts. Each tool position of the tool magazine is provided with a locking mechanism to prevent the tool from flying out. The machine tool is not restricted by tool interference. For equipment of the same specification, the processing range is the largest. The machine tool has two linear axes, X and Z, which can move the turning and milling spindles back and forth, left and right. During the workpiece clamping process, due to the large stroke of the Z-axis, the Z-axis can be moved to the rightmost end, and there is a large space between the tool and the workstation spindle 4, making the operation more convenient. The tool magazine is located at the rear of the machine tool. The turning spindle and the milling spindle can replace tools alternately using the same tool magazine. The turning spindle is fixed, and the milling spindle performs rotary machining to achieve the combination of turning and milling. This can not only ensure the rigidity of the turning spindle but also meet the machining ability of the milling spindle.

[0029] Preferably, a plurality of rectangular blocks 18 are fixedly arranged on the side surface of the fixed support 9. A fixing plate 20 is fixedly arranged on the power output end of the tool magazine motor 12. A driving cylinder 41 is fixedly arranged on the side surface of the fixing plate 20. A dial 21 is fixedly arranged at one end of the driving cylinder 41. A travel switch 23 is fixedly arranged on the side surface of the driving cylinder 41 through a support plate. A sliding rod 22 movably penetrates through the middle of the rectangular block 18. A retaining ring 24 is arranged at the other end of the sliding rod 22. A convex plate is fixedly arranged at one end of the sliding rod 22. A plurality of strip-shaped blocks 19 are fixedly arranged on the side surface of the fixed support 9. A short sliding rod movably penetrates through the middle of the strip-shaped block 19. A limiting block 26 is fixedly arranged at one end of the short sliding rod. A vertical spring 25 is movably sleeved at one end of the short sliding rod. A plurality of limiting columns 27 and a plurality of through columns 31 are fixedly arranged on the side surface of the fixed support 9; During specific implementation, the main structure of the main body bed 1 includes a turning spindle, a milling spindle, two linear axes X and Z, a tool magazine rotating axis, and a workpiece spindle 4. The workpiece spindle 4 can be equipped with a flipping fixture and can be flipped after clamping the workpiece, enabling one-time clamping on one machine tool and performing multi-sided machining of turning and milling.

[0030] Preferably, a long screw rod 11 movably penetrates through the tool claw 30. Thread grooves 38 are provided at both ends of the long screw rod 11. Threaded plates 33 are threadedly sleeved at both ends of the long screw rod 11 through the thread grooves 38. Threaded rings 37 are threadedly sleeved at both ends of the long screw rod 11 through the thread grooves 38. Two movable rings 34 and a separating ring 36 are movably sleeved at both ends of the long screw rod 11. An activity cylinder 35 is nested and fixed on the two movable rings 34. A spiral groove is provided at the opening of the surface of the activity cylinder 35. A rubber sheet 39 and a support sheet 40 are adhesively arranged in the spiral groove on the surface of the activity cylinder 35; During specific implementation, the thrust forces generated by the two rubber sheets 39 on the tool are in opposite directions. Thrust is generated through friction. The two thrust forces act on the surface of the tool to increase the gripping force between the tool claws 30 and the tool. The gripping force of the two tool claws 30 on the tool is increased by the four rubber sheets 39, enabling the two tool claws 30 to firmly hold the tool.

[0031] Preferably, two tool claws 30 are movably arranged on the through-column 31. A positioning block 29 is fixedly arranged on the side surface of the tool claw 30. A transverse spring 28 is fixedly arranged between the two tool claws 30. One end of multiple through-columns 31 is fixedly provided with a clamping plate 32. An arc-shaped notch is arranged on one side of the tool claw 32. The notches of the two tool claws 32 are adapted to the tool. The spiral directions of the two rubber sheets 39 on the front and back of the tool claw 32 are opposite; During specific implementation, the movable cylinder 35 is located in front of and behind the tool claw 30. When the tool claw 30 holds the tool, the tool moves along the side surface of the tool claw 30, and the tool and the movable cylinder 35 generate friction to make it rotate. After the movable cylinder 35 and the rubber sheet 39 rotate synchronously, when the rubber sheet 39 rotates, it generates friction with the tool. Since the rubber sheet 39 is spirally wound around the surface of the movable cylinder 35, the rubber sheet 39 can roll the tool to move when it rotates.

[0032] Preferably, the spacer ring 36 is located between the movable ring 34 and the threaded ring 37. The support sheet 40 is spirally wound around the surface of the movable cylinder 35 through the spiral groove. The rubber sheet 39 is spirally wound around the surface of the movable cylinder 35 through the spiral groove. The support sheet 40 is made of rubber. The rubber sheet 39 covers the column support sheet 40, and there is no contact between the support sheet 40 and the rubber sheet 39. The spiral directions of the threaded grooves 38 at both ends of the long screw 11 are opposite. The tool claw 32 is located between the two movable cylinders 35; During specific implementation, the rubber sheet 39 is spirally wound around the surface of the movable cylinder 35. When the rubber sheet 39 rotates, it will generate a thrust force on the tool. The direction of the thrust force is parallel to the axial direction of the sliding rod 22. The spiral directions of the two rubber sheets 39 are opposite. The thrust forces generated by the two rubber sheets 39 act on the surface of the tool and cancel each other out. The four rubber sheets 39 are respectively located on both sides of the tool. The frictional forces of the four rubber sheets 39 act on both sides of the tool. The thrust forces in four directions act on both sides of the tool, enabling the two tool claws 32 to stably hold the tool. The rubber sheet 39 is semicircular. After the rubber sheet 39 abuts against the surface of the tool, it deforms, which can greatly increase the contact area between the rubber sheet 39 and the tool, and greatly increase the frictional force between the rubber sheet 39 and the tool. The support sheet 40 is located in the depression of the rubber sheet 39. After the rubber sheet 39 deforms, it abuts against the surface of the support sheet 40. The support sheet 40 abuts against the rubber sheet 39, increasing the normal pressure of the rubber sheet 39 on the tool, thereby further increasing the frictional force between the rubber sheet 39 and the tool, and thus increasing the thrust force generated by the rubber sheet 39 on the tool, enabling the two tool claws 32 to stably hold the tool.

[0033] During specific implementation, the threaded plate 33 is located between the tool claw 30 and the movable cylinder 35, preventing friction between the tool claw 30 and the movable cylinder 35, and playing a role in protecting the tool claw 30 and the movable cylinder 35. The threaded ring 37 can move at both ends of the threaded rod 11 through the threaded groove 38. The threaded ring 37 abuts against the separating ring 36, and can limit the two movable cylinders 35 on the threaded rod 11. The threaded plate 33 can move at both ends of the threaded rod 11 through the threaded groove 38. The movable cylinder 35 and the movable ring 34 are kept fixed. Through the mutual cooperation of the threaded plate 33 and the threaded ring 37, the movable cylinder 35 is limited at the end of the threaded rod 11, so that the two movable cylinders 35 are detachably installed at both ends of the threaded rod 11. At the same time, the threaded rod 11 passes through the tool claw 30, and the two movable cylinders 35 can be installed on the front and back of the tool claw 30 through the threaded rod 11.

[0034] Preferably, there are two tool claws 30. The claw opening of one tool claw 30 is straight and is movably penetrated by two through columns 31. The claw opening of the other tool claw 30 is arc-shaped and is movably penetrated by the through column 31. The side surface thereof abuts against the side surface of the limit column 27. Two transverse springs 28 abut against the middle of the tool claw 30; During specific implementation, the tool magazine motor 12 drives the fixed plate 20, the paddle 21 and the travel switch 23 to rotate, so that the travel switch 23 is aligned with the convex plate at one end of the sliding rod 22. The driving cylinder 41 drives the paddle 21 and the travel switch 23 to move synchronously. The paddle 21 moves along the axial direction of the sliding rod 22. The paddle 21 abuts against the convex plate at one end of the sliding rod 22, driving the sliding rod 22 to move in the rectangular block 18. The paddle 21 pulls back the convex plate, and the sliding rod 22 and the limit block 26 and other structures move synchronously, so that the spherical limit block 26 in front of the sliding rod 22 will be pulled out from the rear ends of the two tool claws 30. One of the tool claws 30 rotates around the through column 31, and the tool can be sent into the tool claw 30, and the tool change is completed. The driving cylinder 41 extends, and the driving cylinder 41 drives the paddle 21 away from the convex plate at one end of the sliding rod 22. The sliding rod 22 rebounds through the transverse spring 28, and sends the spherical limit block 26 back between the two tool claws 30, and the tool claw 30 will be locked and unable to rotate, and the tool cannot be thrown out when the tool magazine rotates.

[0035] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A horizontal turning and milling compound center capable of automatic tool change, comprising a main bed (1) and a spindle motor (2) fixedly arranged on the side thereof, characterized in that: A workpiece spindle (4) is fixedly arranged on the top of the main bed (1), and a plurality of belts (3) are arranged between the workpiece spindle (4) and the spindle motor (2) for transmission. An X-axis bed (5) is slidably arranged on the top of the main bed (1) via a guide rail, and a turning and milling spindle (6) is slidably arranged on the top of the X-axis bed (5) via a guide rail. A vertical frame (7) is fixedly arranged on the side of the main bed (1), and a tool magazine motor (12) is fixedly arranged on the side of the vertical frame (7). A fixed bracket (9) is fixedly arranged on the side of the vertical frame (7), and the turning and milling spindle (6) is fixedly arranged on the side of the vertical frame (7). ) is fixedly provided with a milling tool spindle (13) and a turning tool spindle (14), the ends of the milling tool spindle (13) and the turning tool spindle (14) are both provided with a tool-beating cylinder (16), a milling spindle motor (15) is fixedly provided on the turning and milling spindle (6), a tool magazine motor (12) is fixedly provided on the side of the fixed bracket (9), a flip fixture (17) is fixedly provided on one end of the workpiece spindle (4), an X servo motor (8) is fixedly provided on the X-axis bed (5), and a Z servo motor (10) is fixedly provided on the top of the main bed (1).

2. The horizontal turning-milling compound center with automatic tool change according to claim 1 is characterized in that: A plurality of rectangular blocks (18) are fixedly arranged on the side of the fixed bracket (9); a fixed plate (20) is fixedly arranged on the power output end of the tool magazine motor (12); a driving cylinder (41) is fixedly arranged on the side of the fixed plate (20); a paddle (21) is fixedly arranged on one end of the driving cylinder (41); a travel switch (23) is fixedly arranged on the side of the driving cylinder (41) via a support plate; a sliding rod (22) is movably penetrated in the middle of the rectangular block (18); a retaining ring (24) is arranged on the other end of the sliding rod (22); and a convex plate is fixedly arranged on one end of the sliding rod (22).

3. The horizontal turning-milling compound center with automatic tool change according to claim 2 is characterized in that: A plurality of strip blocks (19) are fixedly arranged on the side of the fixed bracket (9), a short slide bar movably penetrates the middle of the strip block (19), a limit block (26) is fixedly arranged on one end of the short slide bar, a vertical spring (25) is movably sleeved on one end of the short slide bar, and a plurality of limit columns (27) and a plurality of penetration columns (31) are fixedly arranged on the side of the fixed bracket (9).

4. The horizontal turning-milling compound center with automatic tool change according to claim 3 is characterized in that: Two tool claws (30) are movably arranged on the through-column (31), a positioning block (29) is fixedly arranged on the side of the tool claw (30), a transverse spring (28) is fixedly arranged between the two tool claws (30), and a clamping plate (32) is fixedly arranged at one end of the through-columns (31).

5. The horizontal turning-milling compound center with automatic tool change according to claim 4 is characterized in that: A long screw rod (11) movably penetrates the tool claw (30), and thread grooves (38) are provided at both ends of the long screw rod (11). Thread plates (33) are threadedly sleeved at both ends of the long screw rod (11) through the thread grooves (38), and thread rings (37) are threadedly sleeved at both ends of the long screw rod (11) through the thread grooves (38).

6. The horizontal turning-milling compound center with automatic tool change according to claim 5, characterized in that: Two movable rings (34) and a separation ring (36) are movably sleeved at both ends of the long screw rod (11); a movable cylinder (35) is nested and fixed on the two movable rings (34); a spiral groove is provided on the surface opening of the movable cylinder (35); and a rubber sheet (39) and a support sheet (40) are bonded in the spiral groove on the surface of the movable cylinder (35).

7. The horizontal turning-milling compound center with automatic tool change according to claim 6, characterized in that: The separation ring (36) is located between the movable ring (34) and the threaded ring (37), the support sheet (40) is spirally wound around the surface of the movable cylinder (35) through the spiral groove, and the rubber sheet (39) is spirally wound around the surface of the movable cylinder (35) through the spiral groove.

8. The horizontal turning-milling compound center with automatic tool change according to claim 6, characterized in that: The support sheet (40) is made of rubber, the rubber sheet (39) covers the column support sheet (40), and the support sheet (40) and the rubber sheet (39) are not in contact with each other, the spiral directions of the thread grooves (38) at both ends of the long screw (11) are opposite, and the tool claw (32) is located in the middle of the two movable cylinders (35).

9. The horizontal turning-milling compound center with automatic tool change according to claim 6, characterized in that: An arc-shaped notch is provided on one side of the tool claw (32), the notches of the two tool claws (32) are adapted to the tool, and the spiral directions of the two rubber sheets (39) on the front and back sides of the tool claw (32) are opposite.

10. The horizontal turning-milling compound center with automatic tool change according to claim 4, characterized in that: The tool claw (30) is divided into two, one of which has a straight jaw opening and is movably penetrated by two penetration columns (31), and the other has an arc-shaped jaw opening and is movably penetrated by the penetration column (31), with its side surface abutting against the side surface of the limiting column (27), and two transverse springs (28) abutting between the two tool claws (30).

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