Plasma surfacing machine drive device and system

Abstract

The application discloses a kind of plasma surfacing machine driving device and system, including shell, lifting mechanism, X-axis moving mechanism, Y-axis moving mechanism, steering mechanism, swing mechanism, lifting mechanism is set on the bottom wall of shell, and the work of lifting is completed by two second electric telescopic rods;X-axis moving mechanism is set on shell, and the work of X-axis movement is completed by the cooperation of gear and rack;Fixed frame is installed in the shell, Y-axis moving mechanism is set on fixed frame, and the work of Y-axis movement is completed by the rotation of screw rod;Rack one end is equipped with support frame, steering mechanism is set on support frame, and the work of steering is completed by the rotation of U-shaped frame;Crank is installed below U-shaped frame, swing mechanism is set on U-shaped frame, and the work of swing is completed by the rotation of crank, the advantage of the application is that welding gun swing direction can be adjusted according to the machining parts, swing angle does not need manual operation adjustment, effectively improves the advantages of processing efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, in particular to a plasma surfacing machine driving device and system. BACKGROUND

[0002] Plasma welding is mainly used for welding and surface modification of metal materials. Plasma powder surfacing uses plasma arc as a heat source and uses alloy powder as a filler metal to form an alloy layer on the surface of the filled metal to meet the performance requirements of wear resistance, corrosion resistance and high hardness. In the plasma powder surfacing process, manual surfacing is used when cladding the entire cylindrical workpiece such as a roller shaft, which has low work efficiency and poor cladding quality. In automatic surfacing, the cylindrical workpiece needs to be fixed on the chuck of a numerical control machine tool, and the parameters of the rotation and movement of the numerical control machine tool are adjusted. At the same time, the welding torch is swung by a swing motor or a mechanical arm for swing cladding. The automatic surfacing cladding effect is good, and the work efficiency is improved. Patent No. CN110587085B proposes a device that can lift and translate the cladded workpiece during rotation, and the welding torch reciprocates to swing around the cylindrical workpiece. The design is reasonable and the cost is low. However, manual operation is required to adjust the swing angle, which reduces production efficiency, and the welding torch adjustment direction is troublesome and occupies a large amount of space. SUMMARY

[0003] The present application relates to the technical field of welding equipment, in particular to a plasma surfacing machine driving device and system.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a plasma surfacing machine driving device, comprising a housing, a lifting mechanism, an X-axis moving mechanism, a Y-axis moving mechanism, a steering mechanism and a swing mechanism, characterized in that: two second electric telescopic rods are installed on the inner bottom wall of the housing, the lifting mechanism is arranged on the bottom wall of the housing, and the lifting work is completed by the two second electric telescopic rods.

[0005] A gear is installed inside the housing, and a rack is installed on the gear. The X-axis moving mechanism is arranged on the housing, and the X-axis moving work is completed by the cooperation of the gear and the rack.

[0006] A fixed frame is installed inside the housing, and a lead screw is installed in the fixed frame. The Y-axis moving mechanism is arranged on the fixed frame, and the Y-axis moving work is completed by the rotation of the lead screw.

[0007] One end of the rack is provided with a support frame, and a U-shaped frame is installed below the support frame. The steering mechanism is arranged on the support frame, and the steering work is completed by the rotation of the U-shaped frame.

[0008] A crank is installed below the U-shaped frame, and the swinging mechanism is arranged on the U-shaped frame, and the swinging work is completed through the rotation of the crank.

[0009] Preferably, the lifting mechanism comprises two second electric telescopic rods, second fixed blocks are rotatably installed at the rear ends of the two second electric telescopic rods, the lower end surfaces of the second fixed blocks are fixedly installed on the inner wall of the shell, first round rods are fixedly installed at the other ends of the second electric telescopic rods, symmetrical second connecting rods and first connecting rods are rotatably connected at the two ends of the first round rods, third fixed blocks are rotatably installed at the other ends of the second connecting rods, the lower end surfaces of the third fixed blocks are fixedly installed on the inner wall of the shell, first fixed blocks are rotatably installed at the other ends of the first connecting rods, a fixed frame is fixedly installed on the upper end surface of the first fixed blocks, a thimble is rotatably installed on the inner wall of the fixed frame, a sliding groove is formed in the upper end surface of the fixed frame, a supporting plate is slidably installed on the fixed frame through a sliding block matched with the sliding groove and arranged at the lower end of the supporting plate, a third servo motor is fixedly installed in the supporting plate, a chuck is fixedly installed on the output shaft of the third servo motor and in penetration with the supporting plate, the supporting plate is rotatably connected with the chuck, a first electric telescopic rod is installed on the outer wall of the supporting plate, and the other end of the first electric telescopic rod is fixedly installed on the inner wall of the shell.

[0010] Preferably, the X-axis moving mechanism comprises a first servo motor, the first servo motor is fixedly installed on the outer wall of the shell, a gear is fixedly installed on the output shaft of the first servo motor in penetration with the shell, and the other end of the gear is rotatably installed on the inner wall of the shell.

[0011] Preferably, the Y-axis moving mechanism comprises a second servo motor, the second servo motor is fixedly installed on the outer wall of the shell, a screw rod is fixedly installed on the output shaft of the second servo motor in penetration with the shell, a threaded sleeve is threadedly sleeved on the screw rod, a sliding groove matched with the rack is formed in the upper end of the threaded sleeve, the rack is slidably installed on the threaded sleeve through the sliding groove, a fixed frame is sleeved on the outer portion of the threaded sleeve, an opening is formed in the upper end of the fixed frame, and the fixed frame is fixedly installed on the inner wall of the shell.

[0012] Preferably, the turning mechanism comprises a fourth servo motor, the fourth servo motor is fixedly installed on the upper end surface of a supporting frame, the outer wall of one side of the supporting frame is fixedly installed on the rack, a U-shaped frame is fixedly installed on the output shaft of the fourth servo motor in penetration with the supporting frame, and the U-shaped frame is rotatably connected with the supporting frame.

[0013] Preferably, a sliding sleeve is fixedly installed on the outer wall of one side of the supporting frame, a sliding rod is slidably sleeved in the sliding sleeve, and the sliding rod is slidably installed on the shell through the sliding grooves matched with the sliding rod and formed in the shell.

[0014] Preferably, the swing mechanism comprises a fifth servo motor, a support rod is fixedly installed at the front end face of the fifth servo motor, the support rod is fixedly installed on the outer wall of the U-shaped frame, a second disc is fixedly installed at the lower end of the support rod, a sliding groove is formed in one side of the second disc, a first disc is slidably installed in the sliding groove, a fifth connecting rod is rotatably installed at the outer side of the first disc, a powder feeder is fixedly installed on the other side of the outer wall of the second disc, a crank is rotatably installed at the lower end of the U-shaped frame, the output shaft of the fifth servo motor penetrates through the support rod and the U-shaped frame and is fixedly installed on the crank, two symmetrical third connecting rods are rotatably connected to the lower end of the crank, a fourth connecting rod is rotatably connected to the other end of the third connecting rod, the fourth connecting rod is rotatably connected to the other end of the fifth connecting rod, a first support ring is fixedly installed on the outer wall of the fourth connecting rod, a welding gun is installed in the first support ring, a second support ring is installed at the lower end of the welding gun, a second circular rod is fixedly installed on the outer wall of one side of the second support ring, and the second circular rod is rotatably installed on the second disc through the fifth connecting rod.

[0015] Preferably, a door is installed on the outer wall of the shell, a control panel is installed on the outer wall of the shell, an opening is formed in one side of the upper end of the shell, an electrical cabinet is installed on the inner wall of the shell and located at the rear side of the control panel.

[0016] Preferably, the driving system of the plasma surfacing machine comprises the following steps.

[0017] First step: the operator fixes the part on the fixing frame through the chuck, and then makes the fixing frame rise to a suitable height through the second electric telescopic rod;

[0018] Second step: the operator controls the first servo motor to rotate through the control panel, the first servo motor drives the gear to rotate, the rack moves in the X-axis direction in the threaded sleeve because the gear and the rack are intermeshed, the rack drives the support frame to move, the support frame drives the sliding sleeve to move on the sliding rod in the sliding groove, and simultaneously drives the welding gun to move, so as to determine the X-axis position;

[0019] Third step: the control panel controls the second servo motor to rotate, the second servo motor drives the lead screw to rotate, the threaded sleeve moves in the Y-axis direction because the lead screw and the outer threaded sleeve are threadedly connected, the threaded sleeve moves while driving the rack to move in the Y-axis direction, the rack drives the support frame to move, the support frame drives the sliding sleeve to move on the sliding rod, and simultaneously drives the welding gun to move, so as to determine the Y-axis position;

[0020] Fourth step: the control panel controls the fourth servo motor to rotate, the fourth servo motor drives the U-shaped frame to rotate, and the U-shaped frame drives the welding gun to turn;

[0021] Step 5: the control panel controls the fifth servo motor to rotate reciprocatingly in a small range, the fifth servo motor drives the crank to rotate, the crank drives the first disc to reciprocate in the sliding slot of the second disc through the third connecting rod and the fourth connecting rod, and the first disc drives the fifth connecting rod to reciprocate left and right with the second round rod as the center.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] Firstly, the present application can complete the steering in different angles through the steering mechanism, the fourth servo motor, the U-shaped frame and the welding gun.

[0024] Secondly, the present application can complete the swinging in different processes through the swinging mechanism, the fifth servo motor, the crank, the third connecting rod, the fourth connecting rod, the first disc and the fifth connecting rod.

[0025] Thirdly, the present application can make the welding gun more stable when moving through the sliding rod and the sliding sleeve, the sliding rod and the sliding sleeve, the support frame X-axis, the sliding sleeve and the sliding groove. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the present application;

[0027] Figure 2 It is a structural schematic diagram of the present application; Figure 1 It is another perspective structural schematic diagram;

[0028] Figure 3 It is a sectional view of the present application;

[0029] Figure 4 It is a structural schematic diagram of the present application without the shell;

[0030] Figure 5 It is another perspective structural schematic diagram; Figure 4 It is another perspective structural schematic diagram;

[0031] Figure 6 It is another perspective structural schematic diagram; Figure 5 It is another perspective structural schematic diagram;

[0032] Figure 7 It is a steering mechanism schematic diagram of the present application;

[0033] Figure 8 It is an enlarged schematic diagram of A in the middle; Figure 3

[0034] ​In the figure: 1, the shell; 2, the door; 3, the control panel; 4, the electrical cabinet; 5, the first servo motor; 6, the second servo motor; 7, the third servo motor; 8, the support frame; 9, the fixed frame; 10, the rack; 11, the fixed frame; 12, the screw rod; 13, the gear; 14, the threaded sleeve; 15, the powder feeder; 16, the first electric telescopic rod; 17, the support plate; 18, the sliding rod; 19, the sliding sleeve; 20, the first fixed block; 21, the first connecting rod; 22, the second connecting rod; 23, the first round rod; 24, the second electric telescopic rod; 25, the second fixed block; 26, the sliding groove; 27, the chuck; 28, the fourth servo motor; 29, the U-shaped frame; 30, the crank; 31, the third connecting rod; 32, the fourth connecting rod; 33, the first support ring; 34, the second support ring; 35, the fifth servo motor; 36, the support rod; 37, the first disc; 38, the second disc; 39, the fifth connecting rod; 40, the second round rod; 41, the thimble; 42, the third fixed block. DETAILED DESCRIPTION

[0035] The technical solutions of the present application will be described clearly and completely below in combination with the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] Please refer to Figures 1 to 8 The present application provides a technical solution: a plasma surfacing machine driving device, comprising a shell 1, a lifting mechanism, an X-axis moving mechanism, a Y-axis moving mechanism, a steering mechanism, and a swing mechanism.

[0037] Two second electric telescopic rods 24 are installed on the inner bottom wall of the shell 1, and the lifting mechanism is arranged on the bottom wall of the shell 1 and completes the lifting work through the two second electric telescopic rods 24.

[0038] In the embodiment, the gear 13 is installed in the shell 1, the rack 10 is installed on the gear 13, the X-axis moving mechanism is arranged on the shell 1, and the X-axis moving work is completed through cooperation of the gear 13 and the rack 10.

[0039] In the embodiment, the shell 1 is internally provided with a fixed frame 11, the fixed frame 11 is internally provided with a lead screw 12, the Y-axis moving mechanism is arranged on the fixed frame 11, and the Y-axis moving work is completed through rotation of the lead screw 12; the Y-axis moving mechanism comprises a second servo motor 6, the second servo motor 6 is fixedly installed on the outer wall of the shell 1, the output shaft of the second servo motor 6 penetrates through the shell 1 and is fixedly installed with the lead screw 12, the lead screw 12 is externally provided with a threaded sleeve 14, the threaded sleeve 14 is provided with a sliding groove matched with the rack 10 at the upper end, the rack 10 is slidably installed on the threaded sleeve 14 through the sliding groove, the threaded sleeve 14 is externally provided with the fixed frame 11, the fixed frame 11 is provided with an opening at the upper end and is fixedly installed on the inner wall of the shell 1; the second servo motor 6 drives the lead screw 12 to rotate, since the lead screw 12 is threadedly connected with the threaded sleeve 14 outside, the threaded sleeve 14 moves in the Y-axis direction, the threaded sleeve 14 moves while driving the rack 10 to move in the Y-axis direction, the rack 10 drives the support frame 8 to move, the support frame 8 drives the sliding sleeve 19 to move on the sliding rod 18, while driving the welding gun to move, and the Y-axis position is determined;

[0040] In the embodiment, the rack 10 is provided with the support frame 8 at one end, the support frame 8 is provided with a U-shaped frame 29 below, the steering mechanism is arranged on the support frame 8, and the steering work is completed through rotation of the U-shaped frame 29; the steering mechanism comprises a fourth servo motor 28, the fourth servo motor 28 is fixedly installed on the upper end face of the support frame 8, the outer wall of one side of the support frame 8 is fixedly installed on the rack 10, the output shaft of the fourth servo motor 28 penetrates through the support frame 8 and is fixedly installed with the U-shaped frame 29, and the U-shaped frame 29 is rotationally connected with the support frame 8; the fourth servo motor 28 rotates, the fourth servo motor 28 drives the U-shaped frame 29 to rotate, and the U-shaped frame 29 drives the welding gun to steer;

[0041] In the embodiment, the crank 30 is installed below the U-shaped frame 29, the swing mechanism is arranged on the U-shaped frame 29, and the swing work is completed through the rotation of the crank 30; the swing mechanism comprises a fifth servo motor 35, a supporting rod 36 is fixedly installed on the front end face of the fifth servo motor 35, the supporting rod 36 is fixedly installed on the outer wall of the U-shaped frame 29, a second disc 38 is fixedly installed on the lower end of the supporting rod 36, a sliding groove is formed in one side of the second disc 38, a first disc 37 is slidably installed in the sliding groove, a fifth connecting rod 39 is rotatably installed on the outer side of the first disc 37, a powder feeder 15 is fixedly installed on the other outer wall of the second disc 38, the crank 30 is rotatably installed at the lower end of the U-shaped frame 29, the output shaft of the fifth servo motor 35 penetrates through the supporting rod 36 and the U-shaped frame 29 and is fixedly installed on the crank 30, two symmetrical third connecting rods 31 are rotatably connected to the lower end of the crank 30, a fourth connecting rod 32 is rotatably connected to the other end of the third connecting rod 31, the other end of the fourth connecting rod 32 is rotatably connected with the fifth connecting rod 39, a first supporting ring 33 is fixedly installed on the outer wall of the fourth connecting rod 32, a welding gun is installed in the first supporting ring 33, a second supporting ring 34 is installed at the lower end of the welding gun, a second circular rod 40 is fixedly installed on the outer wall of one side of the second supporting ring 34, and the second circular rod 40 penetrates through the fifth connecting rod 39 and is rotatably installed on the second disc 38; the fifth servo motor 35 rotates back and forth in a small range, the fifth servo motor 35 drives the crank 30 to rotate, the crank 30 drives the first disc 37 to reciprocate in the sliding groove of the second disc 38 through the third connecting rod 31 and the fourth connecting rod 32, and the first disc 37 drives the fifth connecting rod 39 to reciprocate left and right with the second circular rod 40 as the center.

[0042] In the embodiment, the supporting frame 8 is fixedly installed on one side of the outer wall, the sliding sleeve 19 is slidably sleeved in the sliding sleeve 19, the sliding rod 18 is slidably installed on the outer wall of the shell 1 through the sliding grooves 26 formed on the shell 1, when the supporting frame 8 moves along the X-axis, the sliding rod 18 slides in the sliding groove 26 through the sliding sleeve 19, and when the supporting frame 8 moves along the Y-axis, the sliding sleeve 19 slides on the sliding rod 18.

[0043] In the embodiment, the door 2 is installed on the outer wall of the shell 1, the control panel 3 is installed on the outer wall of the shell 1, the opening is formed on one side of the upper end of the shell 1, the electric appliance cabinet 4 is installed on the inner wall of the shell 1 and located at the rear side of the control panel 3.

[0044] In the embodiment, the driving system of the plasma surfacing machine comprises the following steps.

[0045] First step: after connecting the power supply, open the door 2, clamp the workpiece through the chuck 27, then operate the control panel 3, make the first electric telescopic rod 16 extend outward until the workpiece and the ejector pin 41 contact, clamp the workpiece, the third servo motor 7 drives the workpiece on the chuck 27 to rotate, then control the second electric telescopic rod 24 to extend, the second electric telescopic rod pushes the first round rod 23 to move outward, the first round rod 23 pushes the first connecting rod 21 and the second connecting rod 22, the second connecting rod 22 rotates with the third fixed block 42 as the center, the first connecting rod 21 will push the fixed frame 9 to rise through the first fixed block 20, until it stops at the appropriate position;

[0046] Second step: control the first servo motor 5 to rotate through the control panel 3, the first servo motor 5 drives the gear 13 to rotate, since the gear 13 and the rack 10 are engaged with each other, the rack 10 will move in the X-axis direction in the threaded sleeve 14, the support frame 8 will move through the sliding sleeve 19, the slide rod 18 will move in the sliding groove 26, and the welding gun will move at the same time, the X-axis position is determined;

[0047] Third step: control the second servo motor 6 to rotate through the control panel 3, the second servo motor 6 drives the lead screw 12 to rotate, since the lead screw 12 and the outer threaded sleeve 14 are threadedly connected, the threaded sleeve 14 moves in the Y-axis direction, the threaded sleeve 14 moves at the same time, the rack 10 moves in the Y-axis direction, the support frame 8 moves, the sliding sleeve 19 moves on the slide rod 18, and the welding gun moves at the same time, the Y-axis position is determined;

[0048] Fourth step: control the fourth servo motor 28 to rotate through the control panel 3, the fourth servo motor 28 drives the U-shaped frame 29 to rotate, the U-shaped frame 29 drives the welding gun to turn;

[0049] Fifth step: control the fifth servo motor 35 to rotate reciprocatingly with small amplitude through the control panel 3, the fifth servo motor 35 drives the crank 30 to rotate, the crank 30 drives the first disc 37 to reciprocate in the sliding groove of the second disc 38 through the third connecting rod 31 and the fourth connecting rod 32, the first disc 37 drives the fifth connecting rod 39 to reciprocate left and right with the second round rod 40 as the center.

[0050] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A driving device of a plasma surfacing machine, comprising a housing (1), a lifting mechanism, an X-axis moving mechanism, a Y-axis moving mechanism, a turning mechanism, a swinging mechanism, characterized in that: Two second electric telescopic rods (24) are installed on the inner bottom wall of the shell (1), and the lifting mechanism is arranged on the bottom wall of the shell (1) and completes the lifting work through the two second electric telescopic rods (24); A gear (13) is installed in the shell (1), a rack (10) is installed on the gear (13), the X-axis moving mechanism is arranged on the shell (1), and the X-axis moving work is completed through cooperation of the gear (13) and the rack (10); A fixed frame (11) is installed in the shell (1), a lead screw (12) is installed in the fixed frame (11), the Y-axis moving mechanism is arranged on the fixed frame (11), and the Y-axis moving work is completed through rotation of the lead screw (12); A support frame (8) is installed at one end of the rack (10), a U-shaped frame (29) is installed below the support frame (8), the turning mechanism is arranged on the support frame (8), and the turning work is completed through rotation of the U-shaped frame (29); A crank (30) is installed below the U-shaped frame (29), the swinging mechanism is arranged on the U-shaped frame (29), and the swinging work is completed through rotation of the crank (30); The swinging mechanism comprises a fifth servo motor (35), a supporting rod (36) is fixedly installed at the front end face of the fifth servo motor (35) and fixedly installed on the outer wall of the U-shaped frame (29), a second disc (38) is fixedly installed at the lower end of the supporting rod (36), a sliding groove is formed in one side of the second disc (38), a first disc (37) is slidably installed in the sliding groove, a fifth connecting rod (39) is rotatably installed at the outer side of the first disc (37), a powder feeder (15) is fixedly installed on the other outer wall of the second disc (38), the crank (30) is rotatably installed at the lower end of the U-shaped frame (29), the output shaft of the fifth servo motor (35) penetrates through the supporting rod (36) and the U-shaped frame (29) and is fixedly installed on the crank (30), two symmetrically installed third connecting rods (31) are rotatably connected to the lower end of the crank (30), a fourth connecting rod (32) is rotatably connected to the other end of the third connecting rod (31), the fourth connecting rod (32) is rotatably connected to the fifth connecting rod (39), a first supporting ring (33) is fixedly installed on the outer wall of the fourth connecting rod (32), a welding gun is installed in the first supporting ring (33), a second supporting ring (34) is installed at the lower end of the welding gun, a second round rod (40) is fixedly installed on the outer wall of one side of the second supporting ring (34), and the second round rod (40) is rotatably installed on the second disc (38) and penetrates through the fifth connecting rod (39).

2. A drive assembly for a plasma arc welding machine as defined in claim 1 wherein: The lifting mechanism comprises two second electric telescopic rods (24), the rear end of the two second electric telescopic rods (24) is rotatably provided with a second fixed block (25), the lower end surface of the second fixed block (25) is fixedly installed on the inner wall of the shell (1), the other end of the second electric telescopic rod (24) is fixedly installed with a first circular rod (23), the two ends of the first circular rod (23) are rotatably connected with symmetrical second connecting rods (22) and first connecting rods (21), the other end of the second connecting rod (22) is rotatably provided with a third fixed block (42), the lower end surface of the third fixed block (42) is fixedly installed on the inner wall of the shell (1), the other end of the first connecting rod (21) is rotatably provided with a first fixed block (20), the upper end surface of the first fixed block (20) is fixedly installed with a fixed frame (9), the inner wall of the fixed frame (9) is rotatably installed with a thimble (41), the upper end surface of the fixed frame (9) is provided with a sliding groove, the support plate (17) is slidably installed on the fixed frame (9) through the sliding block matched with the sliding groove arranged at the lower end, the inside of the support plate (17) is fixedly installed with a third servo motor (7), the output shaft of the third servo motor (7) is fixedly installed with a chuck (27) penetrating through the support plate (17), the chuck (27) is rotatably connected with the support plate (17), the outer wall of the support plate (17) is installed with a first electric telescopic rod (16), the other end of the first electric telescopic rod (16) is fixedly installed on the inner wall of the shell (1).

3. A drive assembly for a plasma arc deposition machine as defined in claim 2, wherein: The X-axis moving mechanism comprises a first servo motor (5), the first servo motor (5) is fixedly installed on the outer wall of the shell (1), the output shaft of the first servo motor (5) is fixedly installed with a gear (13) penetrating through the shell (1), the other end of the gear (13) is rotatably installed on the inner wall of the shell (1), one side of the gear (13) is engaged with a rack (10).

4. A drive assembly for a plasma arc deposition machine as defined in claim 3, wherein: The Y-axis moving mechanism comprises a second servo motor (6), the second servo motor (6) is fixedly installed on the outer wall of the shell (1), the output shaft of the second servo motor (6) is fixedly installed with a screw rod (12) penetrating through the shell (1), the screw rod (12) is externally threaded with a threaded sleeve (14), the upper end of the threaded sleeve (14) is provided with a sliding groove matched with the rack (10), the rack (10) is slidably installed on the threaded sleeve (14) through the sliding groove, the threaded sleeve (14) is externally sleeved with a fixed frame (11), the fixed frame (11) is provided with an opening at the upper end, and the two ends are fixedly installed on the inner wall of the shell (1).

5. A drive assembly for a plasma arc deposition machine as defined in claim 4, wherein: The turning mechanism comprises a fourth servo motor (28), the fourth servo motor (28) is fixedly installed on the upper end surface of the support frame (8), one side of the outer wall of the support frame (8) is fixedly installed on the rack (10), the output shaft of the fourth servo motor (28) is fixedly installed with a U-shaped frame (29) penetrating through the support frame (8), and the U-shaped frame (29) is rotatably connected with the support frame (8).

6. A drive assembly for a plasma arc deposition machine as defined in claim 5, wherein: One side of the outer wall of the support frame (8) is fixedly installed with a sliding sleeve (19), the sliding sleeve (19) is internally slidably sleeved with a sliding rod (18), and the two ends of the sliding rod (18) are slidably installed on the shell (1) through the sliding grooves (26) matched with the sliding grooves (26) arranged on the shell (1).

7. A drive assembly for a plasma arc deposition machine as defined in claim 6, wherein: The door (2) is installed on the outer wall of the shell (1), the control panel (3) is installed on the outer wall of the shell (1), the opening is formed on one side of the upper end of the shell (1), the electric appliance cabinet (4) is installed on the inner wall of the shell (1), and is located at the rear side of the control panel (3).

8. A plasma arc welding machine drive system according to claim 7 wherein, It comprises the following steps: Step 1: the operator fixes the part on the fixing frame (9) through the chuck (27), and then makes the fixing frame (9) rise to a suitable height through the second electric telescopic rod (24); Step 2: the operator controls the first servo motor (5) to rotate through the control panel (3), the first servo motor (5) drives the gear (13) to rotate, because the gear (13) and the rack (10) are engaged with each other, the rack (10) moves in the X-axis direction in the threaded sleeve (14), the rack (10) drives the support frame (8) to move, the support frame (8) drives the sliding sleeve (19) to move in the sliding slot (26), and the welding gun moves at the same time, and the X-axis position is determined; Step 3: the control panel (3) controls the second servo motor (6) to rotate, the second servo motor (6) drives the lead screw (12) to rotate, because the lead screw (12) and the outer threaded sleeve (14) are threadedly connected, so the threaded sleeve (14) moves in the Y-axis direction, the threaded sleeve (14) moves at the same time, and the rack (10) moves in the Y-axis direction, the rack (10) drives the support frame (8) to move, the support frame (8) drives the sliding sleeve (19) to move on the sliding rod (18), and the welding gun moves at the same time, and the Y-axis position is determined; Step 4: the control panel (3) controls the fourth servo motor (28) to rotate, the fourth servo motor (28) drives the U-shaped frame (29) to rotate, and the U-shaped frame (29) drives the welding gun to turn; Step 5: the control panel (3) controls the fifth servo motor (35) to rotate reciprocatingly in a small range, the fifth servo motor (35) drives the crank (30) to rotate, the crank (30) drives the first disc (37) to reciprocate in the sliding slot of the second disc (38) through the third connecting rod (31) and the fourth connecting rod (32), and the first disc (37) drives the fifth connecting rod (39) to swing reciprocatingly left and right with the second circular rod (40) as the center.

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