Row tool type five-axis linkage turning and milling composite machine tool

Abstract

The utility model relates to the technical field of composite machine tools, and discloses a gang tool type five-axis linkage turning and milling composite machine tool which comprises a lathe base, a switching mechanism used for switching milling cutters is arranged at the top of the lathe base, and a first moving mechanism used for transversely moving the switching mechanism is arranged at the top of the lathe base. And a second moving mechanism used for longitudinally moving the switching mechanism is arranged on the first moving mechanism, a clamping mechanism used for fixing and rotating the workpiece is installed at the top of the lathe base, and an adjusting mechanism used for moving the clamping mechanism is arranged at the top of the lathe base. According to the five-axis linkage turning and milling machine, the effect of five-axis linkage can be achieved, the positions of a milling cutter and a workpiece are adjusted, the practicability is improved, the milling cutter can be rapidly switched, the turning and milling work efficiency is greatly improved, a user can conveniently collect and process waste generated during turning and milling due to the arrangement of a waste groove, and the practicability is high. And the use convenience is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compound machine tools, and in particular to a row-type five-axis linkage turning and milling compound machine tool. Background Art

[0002] A turning-milling compound machine tool is a machine tool that integrates turning and milling functions and is capable of processing complex parts. This machine tool combines the characteristics of a lathe and a milling machine, has efficient and precise processing capabilities, and is suitable for processing workpieces of various shapes and sizes. A turning-milling compound machine tool usually includes a turning spindle and a milling spindle, and can complete turning and milling operations on the same workbench. This machine tool has high processing accuracy and efficiency and is suitable for workpieces that require complex contour processing, such as molds, aviation parts, etc. Due to the multi-functional, high-precision and high-efficiency characteristics of turning-milling compound machines, they are widely used in aerospace, automobile manufacturing, mold manufacturing and other industries. It can meet the needs of complex workpiece processing and improve production efficiency and processing accuracy.

[0003] Traditional power turret-type turning and milling machines cannot process parts that require power head linkage processing because the power head does not have a rotary indexing function. Therefore, the solutions to this problem currently on the market are: 1. Use five-axis turning and milling with a swing head milling spindle, but this swing head milling spindle can only be equipped with one milling tool at a time, and the tool change speed is very slow, which seriously affects the processing efficiency; 2. Install a rotary table on the power turret to realize the indexing swing of the milling tool, but this solution lacks a linear interpolation axis and cannot realize five-axis linkage processing. Utility Model Content

[0004] The purpose of the utility model is to provide a five-axis linkage turning and milling compound machine tool with a row of cutters, so as to solve the problem that the traditional turning and milling compound machine with a power turret cannot process parts that require linkage processing of the power head because the power head does not have a rotary indexing function. Therefore, the solutions to this problem currently on the market include: 1. Five-axis turning and milling compound processing with a swing head milling spindle, but this swing head milling spindle can only be equipped with one milling tool at a time, and the tool changing speed is very slow, which seriously affects the processing efficiency; 2. Installing a rotary table on the power turret to realize the indexing swing of the milling tool, but this solution lacks a linear interpolation axis and cannot realize the problem of five-axis linkage processing.

[0005] The utility model provides the following technical solutions: a row-tool type five-axis linkage turning-milling compound machine tool, comprising a lathe base, a switching mechanism for switching milling cutters is arranged on the top of the lathe base, a first moving mechanism for lateral movement of the switching mechanism is arranged on the top of the lathe base, a second moving mechanism for longitudinal movement of the switching mechanism is arranged on the first moving mechanism, a clamping mechanism for fixing and rotating a workpiece is installed on the top of the lathe base, an adjusting mechanism for moving the clamping mechanism is arranged on the top of the lathe base, and a waste trough is opened on the top of the lathe base.

[0006] As a preferred embodiment of the above technical solution, the first moving mechanism includes a first mounting frame fixedly connected to the top of the lathe base, a first motor is fixedly connected to the outer side of the first mounting frame, a first ball screw is fixedly connected to the output shaft of the first motor, a first connecting block is threadedly connected to the outer side of the first ball screw, a first fixed seat is fixedly connected to the outer side of the first connecting block, a first slide is fixedly connected to the top of the first fixed seat, and a first slide rail is slidably connected to the bottom of the first slide.

[0007] As a preferred embodiment of the above technical solution, the first connecting block is fixedly connected to the first fixed seat by a plurality of bolts, a through hole is opened on the inner side of the first fixed seat, the aperture of the through hole is larger than the diameter of the first ball screw, and the end of the first ball screw away from the first motor passes through the through hole and is rotatably connected to the inner side of the first mounting frame through a bearing seat, and there are two first slide rails, both of which are fixedly connected to the top of the first mounting frame, and both of which are slidably connected to the first slide seat.

[0008] As a preferred embodiment of the above technical solution, the second moving mechanism includes a second mounting bracket fixedly connected to the top of the first sliding seat, a second motor fixedly connected to the outer side of the second mounting bracket, a second ball screw fixedly connected to the output shaft of the second motor, the outer thread of the second ball screw is connected to the second connecting block, the outer side of the second connecting block is fixedly connected to the second fixed seat, the top of the second fixed seat is fixedly connected to the second sliding seat, and the bottom of the second sliding seat is slidably connected to the second slide rail. When in use, the user can mount the milling cutter to be used on the fixed bracket on the turntable, and then start the first motor and the second motor. The first motor drives the first ball screw to rotate, and the rotation of the first ball screw drives the first connecting block and the first fixed seat to move. The movement of the seat drives the first slide to move through the first slide rail, the movement of the first slide drives the second moving mechanism to move, and the second motor drives the second ball screw to rotate. Similarly, the second connecting block and the second fixed seat move, and the movement of the second fixed seat drives the second slide to move through the second slide rail. The movement of the second slide drives the turntable and the milling cutter to move. When the milling cutter moves to the position of the workpiece, the workpiece can be turned and milled. When the milling cutter needs to be replaced, the user can move the turntable through the second moving mechanism, and then drive the turntable to rotate through the third motor to replace the milling cutter on the turntable. After that, the milling cutter can be driven to move by the second moving mechanism again to turn and mill the workpiece, thereby realizing the position adjustment of the milling cutter, thereby improving practicality.

[0009] As a preferred embodiment of the above technical solution, the second connecting block is fixedly connected to the second fixed seat by a plurality of bolts, a through hole is opened on the inner side of the second fixed seat, the aperture of the through hole is larger than the diameter of the second ball screw, and the end of the second ball screw away from the second motor passes through the through hole and is rotatably connected to the inner side of the second mounting frame through the bearing seat, and there are two second slide rails, both of which are fixedly connected to the top of the second mounting frame, and both of which are slidably connected to the second slide seat.

[0010] As a preferred embodiment of the above technical solution, the switching mechanism includes a turntable rotatably connected to the top of the second slide and a tool holder installed on the top of the second slide, four fixed frames are fixedly connected to the outer side of the turntable, and a third motor is fixedly connected to the top of the fixed frame.

[0011] As a preferred embodiment of the above technical solution, the turntable is rotatably connected to the top of the second slide seat through a bearing seat, and the output shaft of the third motor passes through the fixed frame and is fixedly connected to the turntable.

[0012] As a preferred embodiment of the above technical solution, the adjustment mechanism includes a bracket fixedly connected to the top of the lathe base, the top of the bracket is fixedly connected to a fourth motor, the output shaft of the fourth motor is fixedly connected to a third ball screw, the outer side of the third ball screw is threadedly connected to a third connecting block, the outer side of the third connecting block is fixedly connected to a third slide, the top of the third slide is fixedly connected to a mounting plate, and the top of the third slide is slidably connected to a third slide rail.

[0013] As a preferred embodiment of the above technical solution, one end of the third ball screw away from the fourth motor is rotatably connected to the inner side of the bracket through a bearing seat, and there are two third slide rails, both of which are fixedly connected to the top of the bracket, and both of which are slidably connected to the third slide seat.

[0014] As a preferred embodiment of the above technical solution, the clamping mechanism includes a support fixedly connected to the outer side of the mounting plate, a high-speed power head is fixedly connected to the outer side of the support, and a pneumatic clamp is fixedly connected to the output shaft of the high-speed power head. When in use, the user can fix the workpiece that needs to be turned and milled through the pneumatic clamp, and then the workpiece can be driven to rotate through the high-speed power head, and then the fourth motor can be started, and the fourth motor drives the third ball screw to rotate, and the rotation of the third ball screw will drive the third connecting block to move, and the movement of the third connecting block drives the third slide to move through the third slide rail, and the movement of the third slide drives the mounting plate to move, and the movement of the mounting plate drives the high-speed power head and the pneumatic clamp to move, and the position of the workpiece can be adjusted at this time. After that, the user can adjust the position of the milling cutter through the first moving mechanism and the second moving mechanism, and then turn and mill the workpiece, thereby realizing the adjustment of the position of the workpiece, thereby further improving the turning and milling effect and improving the convenience of use, and the high-speed power head is fixedly connected to the pneumatic clamp through the support.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model is provided with a lathe base, a waste trough, a first moving mechanism, a second moving mechanism, a clamping mechanism, an adjusting mechanism, and a switching mechanism. When in use, the user can install the milling cutter to be used on the fixed frame on the turntable, and then fix the workpiece to be turned and milled by the pneumatic clamping jaws, and then start the first motor and the fourth motor. The first motor drives the first ball screw to rotate, and the rotation of the first ball screw drives the first connecting block and the first fixed seat to move. The movement of the first fixed seat drives the first slide seat to move through the first slide rail, and the movement of the first slide rail drives the second moving mechanism to move. The fourth motor drives the third ball screw to rotate. The rotation of the third ball screw will drive the third connecting block to move. The movement of the third connecting block drives the third slide seat to move through the third slide rail. The movement of the third slide seat drives the installation plate to move. The movement of the installation plate drives the high-speed power head and the pneumatic clamping jaws to move. At this time, the position of the workpiece can be adjusted, and then The user can start the second motor, and the second motor drives the second ball screw to rotate. Similarly, the second connecting block and the second fixed seat move, and the movement of the second fixed seat drives the second slide seat to move through the second slide rail. The movement of the second slide seat drives the turntable and the milling cutter to move. When the milling cutter moves to the position of the workpiece, the workpiece can be turned and milled. When the milling cutter needs to be replaced, the user can move the turntable through the second moving mechanism, and then drive the turntable to rotate through the third motor, so as to replace the milling cutter on the turntable. After that, the milling cutter can be driven by the second moving mechanism again to turn and mill the workpiece, achieving the effect of five-axis linkage, thereby adjusting the position of the milling cutter and the workpiece, thereby improving practicality, and the milling cutter can be quickly switched, thereby greatly improving the working efficiency of turning and milling. The setting of the waste trough is convenient for users to collect and process the waste generated during turning and milling, further improving convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a gang-tool type five-axis linkage turning and milling machine tool from the first perspective;

[0018] Figure 2 A schematic diagram of a gang-tool type five-axis linkage turning-milling compound machine tool from a second perspective;

[0019] Figure 3 A schematic diagram of a gang-tool type five-axis linkage turning-milling compound machine tool from a third perspective;

[0020] Figure 4 A schematic diagram of a gang-tool type five-axis linkage turning-milling compound machine tool from the fourth perspective;

[0021] Figure 5 for Figure 2 A schematic diagram of the structure enlargement in the middle;

[0022] Figure 6 for Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0023] Figure 7 for Figure 4 Enlarged schematic diagram of the structure at point C in the middle.

[0024] In the figure: 1. lathe base; 2. waste trough; 11. first mounting frame; 12. first motor; 13. first ball screw; 14. first connecting block; 15. first fixed seat; 16. first slide; 17. first slide rail; 21. second mounting frame; 22. second motor; 23. second ball screw; 24. second connecting block; 25. second fixed seat; 26. second slide; 27. second slide rail; 31. turntable; 32. tool holder; 33. fixed frame; 34. third motor; 41. bracket; 42. fourth motor; 43. third ball screw; 44. third connecting block; 45. third slide; 46. mounting plate; 47. third slide; 51. support; 52. high-speed power head; 53. pneumatic clamp. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] Embodiment 1

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the utility model provides a technical solution: a row-tool type five-axis linkage turning and milling compound machine tool, including a lathe base 1, a switching mechanism for switching milling cutters is arranged on the top of the lathe base 1, a first moving mechanism for lateral movement of the switching mechanism is arranged on the top of the lathe base 1, a second moving mechanism for longitudinal movement of the switching mechanism is arranged on the first moving mechanism, a clamping mechanism for fixing and rotating a workpiece is installed on the top of the lathe base 1, an adjusting mechanism for moving the clamping mechanism is arranged on the top of the lathe base 1, a waste trough 2 is opened on the top of the lathe base 1, the first moving mechanism includes a first mounting frame 11 fixedly connected to the top of the lathe base 1, and the outer side of the first mounting frame 11 is fixedly connected to a first The motor 12, a first ball screw 13 is fixedly connected to the output shaft of the first motor 12, the outer side of the first ball screw 13 is threadedly connected to the first connecting block 14, the outer side of the first connecting block 14 is fixedly connected to the first fixed seat 15, the top of the first fixed seat 15 is fixedly connected to the first slide seat 16, the bottom of the first slide seat 16 is slidably connected to the first slide rail 17, the first connecting block 14 is fixedly connected to the first fixed seat 15 by a plurality of bolts, a through hole is provided on the inner side of the first fixed seat 15, the aperture of the through hole is larger than the diameter of the first ball screw 13, and the end of the first ball screw 13 away from the first motor 12 passes through the through hole and is rotatably connected to the inner side of the first mounting frame 11 through the bearing seat, and there are two first slide rails 17, and the two first slide rails 17 are fixedly connected The second movable mechanism is connected to the top of the first mounting frame 11, and the two first slide rails 17 are both slidably connected to the first slide seat 16. The second moving mechanism includes a second mounting frame 21 fixedly connected to the top of the first slide seat 16, a second motor 22 is fixedly connected to the outer side of the second mounting frame 21, a second ball screw 23 is fixedly connected to the output shaft of the second motor 22, a second connecting block 24 is connected to the outer thread of the second ball screw 23, a second fixed seat 25 is fixedly connected to the outer side of the second connecting block 24, a second slide seat 26 is fixedly connected to the top of the second fixed seat 25, a second slide rail 27 is slidably connected to the bottom of the second slide seat 26, the second connecting block 24 is fixedly connected to the second fixed seat 25 by a plurality of bolts, a through hole is opened on the inner side of the second fixed seat 25, and the aperture of the through hole is The second ball screw 23 has a diameter greater than that of the second ball screw 23, and one end of the second ball screw 23 away from the second motor 22 passes through the through hole and is rotatably connected to the inner side of the second mounting frame 21 through a bearing seat. There are two second slide rails 27, and the two second slide rails 27 are fixedly connected to the top of the second mounting frame 21, and the two second slide rails 27 are slidably connected to the second slide seat 26. The switching mechanism includes a turntable 31 rotatably connected to the top of the second slide seat 26 and a tool holder 32 installed on the top of the second slide seat 26. Four fixing frames 33 are fixedly connected to the outer side of the turntable 31, and a third motor 34 is fixedly connected to the top of the fixing frame 33. The turntable 31 is rotatably connected to the top of the second slide seat 26 through a bearing seat, and the output shaft of the third motor 34 passes through the fixing frame 33 and is fixedly connected to the turntable 31.

[0028] Through the above technical solution, when in use, the user can install the milling cutter to be used on the fixed frame 33 on the turntable 31, and then start the first motor 12 and the second motor 22. The first motor 12 drives the first ball screw 13 to rotate, and the rotation of the first ball screw 13 drives the first connecting block 14 and the first fixed seat 15 to move. The movement of the first fixed seat 15 drives the first slide seat 16 to move through the first slide rail 17. The movement of the first slide seat 16 drives the second moving mechanism to move. The second motor 22 drives the second ball screw 23 to rotate. Similarly, the second connecting block 24 and the second fixed The seat 25 moves, and the movement of the second fixed seat 25 drives the second slide seat 26 to move through the second slide rail 27. The movement of the second slide seat 26 drives the turntable 31 and the milling cutter to move. When the milling cutter moves to the position of the workpiece, the workpiece can be turned and milled. When the milling cutter needs to be replaced, the user can move the turntable 31 through the second moving mechanism, and then drive the turntable 31 to rotate through the third motor 34, so as to replace the milling cutter on the turntable 31. After that, the milling cutter can be driven to move by the second moving mechanism again, so as to turn and mill the workpiece, thereby realizing the position adjustment of the milling cutter, thereby improving practicality.

[0029] Embodiment 2

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The utility model provides a technical solution: a row-tool type five-axis linkage turning and milling compound machine tool, comprising a lathe base 1, a switching mechanism for switching the milling cutter is arranged on the top of the lathe base 1, a first moving mechanism for lateral movement of the switching mechanism is arranged on the top of the lathe base 1, a second moving mechanism for longitudinal movement of the switching mechanism is arranged on the first moving mechanism, a clamping mechanism for fixing and rotating the workpiece is installed on the top of the lathe base 1, an adjusting mechanism for moving the clamping mechanism is arranged on the top of the lathe base 1, a waste trough 2 is opened on the top of the lathe base 1, the adjusting mechanism comprises a bracket 41 fixedly connected to the top of the lathe base 1, a fourth motor 42 is fixedly connected to the top of the bracket 41, a third ball screw 43 is fixedly connected to the output shaft of the fourth motor 42, and a third ball screw 43 is fixedly connected to the output shaft of the fourth motor 42. The outer side of the three ball screws 43 is threadedly connected to the third connecting block 44, the outer side of the third connecting block 44 is fixedly connected to the third slide 45, the top of the third slide 45 is fixedly connected to the mounting plate 46, the top of the third slide 45 is slidably connected to the third slide rail 47, the end of the third ball screw 43 away from the fourth motor 42 is rotatably connected to the inner side of the bracket 41 through a bearing seat, there are two third slide rails 47, the two third slide rails 47 are fixedly connected to the top of the bracket 41, and the two third slide rails 47 are slidably connected to the third slide 45, the clamping mechanism includes a support 51 fixedly connected to the outer side of the mounting plate 46, the outer side of the support 51 is fixedly connected to the high-speed power head 52, the output shaft of the high-speed power head 52 is fixedly connected to the pneumatic clamp 53, and the high-speed power head 52 passes through the support 51 and is fixedly connected to the pneumatic clamp 53.

[0031] Through the above technical scheme, when in use, the user can fix the workpiece that needs to be turned and milled by the pneumatic clamp 53, and then drive the workpiece to rotate through the high-speed power head 52, and then start the fourth motor 42. The fourth motor 42 drives the third ball screw 43 to rotate. The rotation of the third ball screw 43 will drive the third connecting block 44 to move. The movement of the third connecting block 44 drives the third slide 45 to move through the third slide rail 47. The movement of the third slide 45 drives the mounting plate 46 to move. The movement of the mounting plate 46 drives the high-speed power head 52 and the pneumatic clamp 53 to move. At this time, the position of the workpiece can be adjusted. After that, the user can adjust the position of the milling cutter through the first moving mechanism and the second moving mechanism, and then turn and mill the workpiece, thereby realizing the adjustment of the position of the workpiece, thereby further improving the turning and milling effect and improving the convenience of use.

[0032] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A gang-tool type five-axis linkage turning and milling compound machine tool, comprising a lathe base (1), characterized in that: A switching mechanism for switching a milling cutter is arranged on the top of the lathe base (1); a first moving mechanism for laterally moving the switching mechanism is arranged on the top of the lathe base (1); a second moving mechanism for longitudinally moving the switching mechanism is arranged on the first moving mechanism; a clamping mechanism for fixing and rotating a workpiece is installed on the top of the lathe base (1); an adjusting mechanism for moving the clamping mechanism is arranged on the top of the lathe base (1); and a waste material trough (2) is provided on the top of the lathe base (1).

2. The five-axis gang-type turning-milling compound machine tool according to claim 1, characterized in that: The first moving mechanism comprises a first mounting frame (11) fixedly connected to the top of the lathe base (1); a first motor (12) is fixedly connected to the outer side of the first mounting frame (11); a first ball screw (13) is fixedly connected to the output shaft of the first motor (12); a first connecting block (14) is threadedly connected to the outer side of the first ball screw (13); a first fixed seat (15) is fixedly connected to the outer side of the first connecting block (14); a first slide seat (16) is fixedly connected to the top of the first fixed seat (15); and a first slide rail (17) is slidably connected to the bottom of the first slide seat (16).

3. The five-axis gang-type turning-milling compound machine tool according to claim 2, characterized in that: The first connecting block (14) is fixedly connected to the first fixing seat (15) by a plurality of bolts. A through hole is provided on the inner side of the first fixing seat (15). The aperture of the through hole is larger than the diameter of the first ball screw (13). An end of the first ball screw (13) away from the first motor (12) passes through the through hole and is rotatably connected to the inner side of the first mounting frame (11) through a bearing seat. There are two first slide rails (17). Both of the two first slide rails (17) are fixedly connected to the top of the first mounting frame (11). Both of the two first slide rails (17) are slidably connected to the first slide seat (16).

4. The five-axis gang-type turning-milling compound machine tool according to claim 2, characterized in that: The second moving mechanism comprises a second mounting frame (21) fixedly connected to the top of the first slide seat (16); a second motor (22) is fixedly connected to the outer side of the second mounting frame (21); a second ball screw (23) is fixedly connected to the output shaft of the second motor (22); the second ball screw (23) is externally threadedly connected to a second connecting block (24); a second fixed seat (25) is fixedly connected to the outer side of the second connecting block (24); a second slide seat (26) is fixedly connected to the top of the second fixed seat (25); and a second slide rail (27) is slidably connected to the bottom of the second slide seat (26).

5. The five-axis gang-type milling machine tool according to claim 4 is characterized in that: The second connecting block (24) is fixedly connected to the second fixing seat (25) by a plurality of bolts. A through hole is provided on the inner side of the second fixing seat (25). The aperture of the through hole is larger than the diameter of the second ball screw (23). One end of the second ball screw (23) away from the second motor (22) passes through the through hole and is rotatably connected to the inner side of the second mounting frame (21) through a bearing seat. There are two second slide rails (27). Both of the two second slide rails (27) are fixedly connected to the top of the second mounting frame (21). Both of the second slide rails (27) are slidably connected to the second slide seat (26).

6. The five-axis gang-type turning-milling compound machine tool according to claim 3, characterized in that: The switching mechanism comprises a turntable (31) rotatably connected to the top of the second slide (26) and a tool holder (32) mounted on the top of the second slide (26); four fixed frames (33) are fixedly connected to the outer side of the turntable (31); and a third motor (34) is fixedly connected to the top of the fixed frame (33).

7. The five-axis gang-type milling machine tool according to claim 6, characterized in that: The turntable (31) is rotatably connected to the top of the second slide seat (26) via a bearing seat, and the output shaft of the third motor (34) passes through the fixing frame (33) and is fixedly connected to the turntable (31).

8. The five-axis gang-type turning-milling machine tool according to claim 1, characterized in that: The adjustment mechanism comprises a bracket (41) fixedly connected to the top of the lathe base (1); a fourth motor (42) is fixedly connected to the top of the bracket (41); a third ball screw (43) is fixedly connected to the output shaft of the fourth motor (42); the outer side of the third ball screw (43) is threadedly connected to a third connecting block (44); the outer side of the third connecting block (44) is fixedly connected to a third slide seat (45); the top of the third slide seat (45) is fixedly connected to a mounting plate (46); and the top of the third slide seat (45) is slidably connected to a third slide rail (47).

9. The five-axis gang-type turning-milling compound machine tool according to claim 8, characterized in that: One end of the third ball screw (43) away from the fourth motor (42) is rotatably connected to the inner side of the bracket (41) through a bearing seat. There are two third slide rails (47), both of which are fixedly connected to the top of the bracket (41), and both of which are slidably connected to the third slide seat (45).

10. The gang tool type five-axis linkage turning and milling compound machine tool according to claim 8, characterized in that: The clamping mechanism comprises a support (51) fixedly connected to the outside of the mounting plate (46); a high-speed power head (52) is fixedly connected to the outside of the support (51); a pneumatic clamp (53) is fixedly connected to the output shaft of the high-speed power head (52); and the high-speed power head (52) passes through the support (51) and is fixedly connected to the pneumatic clamp (53).

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