CN113909896B

CN113909896B - Material increasing and decreasing double-station synchronous machining method and device for axis-variable revolving body

Info

Publication number: CN113909896B
Application number: CN202111205428.6A
Authority: CN
Inventors: 杨钦文; 肖罡; 仪传明; 戴璐祎; 李时春; 刘小兰
Original assignee: Hunan University
Current assignee: Hunan University
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2023-09-15
Anticipated expiration: 2041-10-15
Also published as: CN113909896A

Abstract

The invention discloses a double-station synchronous machining device for increasing and decreasing materials of a rotary body with a changeable axle center, which comprises a fixed base, a first upright post, a material adding module, a grinding material reducing module and the like; the gantry crane cross beam can move up and down relative to the gantry crane upright post; the rotary platform can move rotationally relative to the fixed base; the linkage beam rotates relative to the gantry crane beam; the material adding module and the grinding material reducing module can synchronously and horizontally move relative to the linkage beam; at least two first stand posts are respectively arranged outside two end parts of the workbench and are fixed on the rotary platform, and the workbench can incline relative to the first stand posts. The invention has the advantages of compact structure and the like.

Description

Material increasing and decreasing double-station synchronous machining method and device for axis-variable revolving body

Technical Field

The invention relates to the field of desktop type laser processing equipment, in particular to a double-station synchronous processing method and device for increasing and decreasing materials of a revolving body with a changeable axle center.

Background

In traditional laser processing equipment, add material processing is carried out earlier, and then subtract material processing is carried out, and increase and decrease material processing can not accomplish simultaneously, need go up unloading operation and repositioning again, though there is some increase and decrease material combination equipment at present, has the interference problem between each station, leads to increase and decrease material combination equipment to have certain limitation.

Along with the rapid development of the manufacturing industry in China, the customization demand of novel mechanical equipment is increased, and the structural integration and the structural complexity of various parts are improved continuously. Meanwhile, in the aspect of processing high-performance complex parts, various requirements of customization, high precision, high efficiency, low cost, low energy consumption, integration and the like are correspondingly provided. This provides a broad development platform and technical improvement room for additive/subtractive composite manufacturing techniques.

In order to further improve the machining precision and the surface quality of the additive forming parts, a grinding processing link is required to be arranged in the material reduction process of the additive/subtractive composite manufacturing equipment. In addition, a large amount of abrasive dust can be generated during grinding, and under the condition of insufficient sealing performance of a transmission system, key transmission components such as a ball screw and a guide rod of the equipment are easy to accumulate abrasive dust and are severely worn (the abrasive dust acts as abrasive particles at the moment), so that the subsequent working precision of the equipment and the service life of the transmission system of the equipment are seriously affected.

Existing desktop type increasing/decreasing composite manufacturing equipment lacks consideration of protecting inert gas in the laser material increasing process. At present, a large proportion of high-performance complex parts are all made of metal materials, and the oxidation resistance requirement of the metal materials on a specific gas environment in the laser additive rapid forming process is relatively high. Therefore, when the workpiece raw material adopts the metal material, the lack of the protection of the inert gas in the laser material-increasing process can easily lead to the oxidation of the metal material, thereby influencing the forming quality of the metal material, and the application range is narrow and the method is not suitable for the processing of the metal material. In addition, when the grinding stock is processed, the splashed metal material can generate potential safety hazards for operators. The existing additive processing equipment of the additive/subtractive composite manufacturing apparatus often only aims at the forming manufacturing of a specific or specified material, and the consideration of composite material parts is lacking. In particular to a material reduction processing link, which is actually a comprehensive development with great diversity and diversification. In general, the material reduction processing portion is often processed only by cutting (mainly milling) a certain surface in the material forming process. For part of complex parts, the parts are further ground after being subjected to material increasing/reducing processing, and the material reducing function is incomplete, so that the material reducing processing flexibility is lower under special working conditions. Especially, when the parts are irregularly shaped and inconsistent in height, material increasing and reducing machining cannot be synchronously performed, material increasing machining and material reducing machining are required to be separately performed, repeated positioning time and working procedures are increased, and production efficiency is low. In view of the above, the existing additive/subtractive composite manufacturing techniques and equipment designs still have many drawbacks.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a double-station synchronous machining method and device for increasing and decreasing materials of a rotary body with a changeable axis.

In order to solve the technical problems, the invention adopts the following technical scheme:

a double-station synchronous machining device for increasing and decreasing materials of a rotary body with a changeable axle center comprises a fixed base, a first upright post, a gantry crane, a material adding module, a rotary platform, a material grinding and reducing module, a workbench, an electric hydraulic push rod and a linkage beam; the gantry crane comprises a gantry crane beam and gantry crane upright posts, wherein the gantry crane upright posts are positioned at two ends of the gantry crane beam and are fixed on the fixed base; a first driving mechanism for driving the gantry crane cross beam to move up and down is arranged in the gantry crane upright post; a linkage beam is arranged below the gantry crane beam, a fourth driving mechanism is arranged in the gantry crane beam, and the linkage beam rotates relative to the gantry crane beam under the drive of the fourth driving mechanism; the material adding module and the grinding material reducing module are arranged below the linkage beam, a third driving mechanism is arranged in the linkage beam and used for driving the material adding module and the grinding material reducing module to synchronously and horizontally move relative to the linkage beam, and the material adding module and the grinding material reducing module respectively perform material adding processing and material reducing processing on a workpiece on the workbench; the rotary platform is arranged on the fixed base, and a second driving mechanism for driving the rotary platform to rotate is arranged in the fixed base; the outer sides of at least two end parts of the workbench are respectively and correspondingly provided with a first upright post, the first upright post is fixed above the rotary platform, a fifth driving mechanism for driving the end part of the workbench to move up and down is arranged in the first upright post, the fifth driving mechanism is connected with the end parts of the workbench through an electric hydraulic push rod, and the displacements of the upward or downward movement of different end parts of the workbench are unequal, so that the workbench is inclined.

As a further improvement of the above technical scheme:

the second driving mechanism comprises a connecting bearing and a second driving motor, a rotary hole is formed in the upper surface of the fixed base, and a round boss is arranged on the outer side of the periphery of the rotary hole;

the rotary platform comprises an upper round platform cover and a lower rotary rod vertically connected below the upper round platform cover, the upper round platform cover is arranged on the round boss, the lower rotary rod is inserted into the rotary hole, the inner ring of the connecting bearing is sleeved on the outer wall of the lower rotary rod, the outer ring of the connecting bearing is connected with the side wall of the rotary hole, and the second driving motor drives the lower rotary rod to rotate so as to drive the upper round platform cover to rotate.

The lower bottom surface circumference of going up round platform lid is equipped with the upper half groove, round boss upper surface circumference is equipped with the lower half groove, the upper half groove cooperates with the lower half groove and constitutes the slip track, be equipped with a plurality of slip balls in the slip track.

The device comprises a ball pin seat, one end of the electric hydraulic push rod is connected with one end of the workbench, the other end of the electric hydraulic push rod is provided with a ball pin, the ball pin is connected with the ball pin seat, and the other end of the ball pin seat is connected with a fifth driving mechanism. The fifth driving mechanism comprises a fifth driving motor, a fifth supporting seat, a fifth ball screw and a fifth screw connecting piece, wherein the fifth ball screw is vertically arranged, the fifth driving motor is used for driving the fifth ball screw to rotate, the fifth supporting seat is supported at two ends of the fifth ball screw, and the fifth screw connecting piece is sleeved outside the fifth ball screw; the first upright column is provided with a front groove at one side close to the workbench, the fifth screw rod connecting piece penetrates through the front groove to be connected with the ball pin seat, and the fifth ball screw rod is arranged in a dislocation mode with the front groove.

The third driving mechanism comprises a third driving motor, a third supporting seat, a third ball screw and a coupler, wherein the third ball screws with opposite rotation directions are horizontally arranged and connected through the coupler, the third driving motor is used for driving the third ball screw to rotate, the third supporting seat is supported at the end part of the third ball screw, and the material adding module and the material grinding and reducing module are respectively connected to the two third ball screws.

The grinding material reduction module comprises a grinding wheel upright post, a small grinding wheel, a grinding wheel motor, a grinding wheel swinging shaft and a grinding wheel swinging column, wherein the small grinding wheel is positioned outside the grinding wheel upright post and used for milling or grinding the side surface of a workpiece, the grinding wheel motor, the grinding wheel swinging shaft and the grinding wheel swinging column are positioned in the grinding wheel upright post, the grinding wheel swinging shaft is horizontally driven by the grinding wheel motor to rotate so as to drive the small grinding wheel to swing, and the upper end and the lower end of the grinding wheel swinging column are respectively connected with the grinding wheel swinging shaft and the small grinding wheel.

The gantry crane beam comprises a beam shell, a rotating cavity penetrating through the upper surface and the lower surface of the beam shell is formed in the beam shell, and a hanging fixing ring is horizontally arranged at the bottom of the rotating cavity in the circumferential direction;

the fourth driving mechanism comprises a disc bevel gear, a driving bevel gear, a hanging frame, a rolling bearing and a fourth driving motor, wherein the hanging frame is arranged on the hanging fixing ring, the outer wall of the hanging frame is connected with the inner wall of the rotating cavity in a matched mode through the rolling bearing, the disc bevel gear is fixed on the hanging frame and matched with the driving bevel gear, the fourth driving motor drives the driving bevel gear to rotate so as to drive the hanging frame to rotate, and the linkage cross beam is fixed on the lower portion of the hanging frame.

The suspension bracket comprises a suspension supporting part, an upper supporting round platform part and a lower supporting round platform part are respectively arranged on the upper surface and the lower surface of the suspension supporting part, the linkage cross beam is fixed at the bottom of the lower supporting round platform part, the inner hole of the disc bevel gear is sleeved outside the upper supporting round platform part and fixed, the suspension supporting part is placed on a suspension fixing ring, and the outer wall of the suspension supporting part is matched with the inner wall of the rotating cavity through a rolling bearing, so that the suspension bracket is rotated.

The material adding module comprises a laser head and a wire feeding head, the wire feeding head is used for feeding raw materials to the lower part of the laser head for melting, and the laser emission direction of the laser head is perpendicular to the upper surface of the composite working platform and forms an included angle alpha with the wire feeding direction of the wire feeding head, so that the angle alpha is more than 0 and less than 90 degrees.

The grinding material reduction module further comprises two bevel gears which are in meshed transmission, one of the bevel gears is fixed on the grinding wheel swinging shaft, and the grinding wheel motor drives one of the bevel gears to rotate so as to drive the grinding wheel swinging shaft to rotate.

Wedge-shaped grooves are formed in the bottoms of the grinding wheel upright posts.

And two ends of the grinding wheel swinging shaft are fixed on the inner side wall of the grinding wheel upright post.

The side wall of the grinding wheel upright post is provided with a storage opening and a storage door which are convenient to maintain, and the storage door is used for opening and closing the storage opening.

The invention also provides a processing method of the material increasing and decreasing double-station synchronous processing device of the axis-variable revolving body, which comprises the following steps of

Placing a workpiece on a workbench, starting an additive module to emit laser to generate a molten pool on the surface of the workpiece, sending raw materials to the lower part of the additive module, melting and solidifying the raw materials on the workpiece at the molten pool under the action of the laser, starting a grinding and reducing module to synchronously reduce materials on the side surface of the solidified workpiece, changing the relative positions of the workpiece on the workbench, the additive module and the grinding and reducing module, and after reaching a preset thickness layer, moving the additive module upwards to start additive processing of the next thickness layer;

the method for changing the relative positions of the workpiece and the material adding module on the workbench and the grinding material subtracting module comprises the following steps:

mode a: starting a fifth driving mechanism to drive the workbench to incline;

mode B: starting a third driving mechanism to drive the material adding module and the grinding material reducing module to synchronously move horizontally;

mode C: starting a second driving mechanism to drive the rotary platform to rotate;

mode D: starting a fourth driving mechanism to drive the linkage cross beam to rotate;

the material reduction processing specifically comprises: rotating a small grinding wheel of the material reduction module until the small grinding wheel is attached to the side surface of the workpiece to grind the side surface of the workpiece;

The concrete steps of the upward movement material adding module comprise: and opening a first driving mechanism in the portal crane upright post to drive the portal crane cross beam to move upwards.

Compared with the prior art, the invention has the advantages that:

1. according to the invention, through the tilting motion of the workbench, the up-and-down motion of the gantry crane cross beam, the rotation motion of the linkage cross beam, the synchronous horizontal motion of the material adding module and the material subtracting module, the rotation motion of the rotation platform drives the workbench to rotate, so that the requirement of multi-azimuth processing of complex parts is met, various complex parts with different forms of curved surfaces, particularly the axis-variable revolving body, can be processed, the rotation of a small grinding wheel is realized through the swinging of the grinding wheel shaft of the grinding material subtracting module, the bonding of the side wall of the part with any angle can be realized under the rotation of the grinding material subtracting module, the constraint of the complex structural parts to the traditional grinding technology is relieved, and the production flexibility of equipment is further improved.

2. The invention designs the air-tightness protective cover with proper size performance, namely the outer cover, focuses on the air tightness and the protection performance of the whole equipment, ensures the air tightness of the whole equipment while not affecting the stability of a transmission system, is applicable to the forming processing of various material parts which can be processed by laser additive materials including metal materials, has extremely strong working adaptability to diversified processing objects, and greatly expands the working service range of the equipment. The outer cover is isolated from the external environment, and can form a protective gas environment in a negative pressure state, so that the safety of operators is protected while the high-temperature oxidation of materials is prevented.

3. The device is used for synchronously processing the materials by one-time installation and material increase and decrease, compared with the traditional multi-station processing mode, the device omits the steps of repeatedly disassembling and installing workpieces, manually carrying the workpieces and the like, greatly shortens the working time, improves the working efficiency, and reduces the time cost and the labor cost.

4. The device adopts a desktop design, has a smaller overall structure and limited occupied space, can save a large amount of position space in work, has higher portability and flexibility, and can realize larger popularization in production.

5. In operation, the working moving path of each processing part is shorter, so that the whole processing flow is shortened, the production period of the workpiece is further shortened, and the production efficiency is improved. Under the processing advantages of short flow and short period, the energy consumed by the equipment for producing single parts is synchronously reduced along with the reduction of the production period, so that the energy consumption period in the part production process is correspondingly shortened, and the requirements of low energy consumption and low emission are indirectly met.

6. The device is simple and convenient to replace and maintain because the material adding module, the grinding material reducing module and the like are modularized devices. The device adopts a paraxial wire feeding laser melting additive manufacturing technology (the additive module is provided with a wire feeding head and a laser head, the wire feeding head and the laser head are provided with an included angle) to be compounded with a grinding wheel grinding technology (a small grinding wheel of a grinding material reduction module and the like), has high production flexibility, and has extremely high fit with a mixed flow assembly line widely applied in the current manufacturing industry.

Drawings

Fig. 1 is a schematic view of the structure of the device of the present invention.

Fig. 2 is a schematic view of the structure of the device of the present invention (with the cover removed).

Fig. 3 is a schematic structural view of a gantry crane and an additive module, and a grinding and subtractive module.

Fig. 4 is an exploded schematic view of the device within the gantry crane beam.

Fig. 5 is a schematic view of the structure within the gantry crane beam (with the gear protection cover removed).

Fig. 6 is a cross-sectional view taken along line A-A in fig. 5.

Fig. 7 is a schematic structural view of the hanger.

Fig. 8 is a top view of the hanger.

Fig. 9 is a sectional view taken along line B-B of fig. 8.

Fig. 10 is a schematic view of the gantry crane beam (with the beam cover removed).

Fig. 11 is a schematic structural view of a linkage beam and an additive module, and a grinding and subtractive module.

Fig. 12 is a schematic connection diagram of the third drive mechanism and the additive module, grinding and subtractive module.

Fig. 13 is a schematic structural view of an additive module.

Fig. 14 is a schematic view of the structure of the mill lumber module.

Fig. 15 is a schematic view of the structure of the grinding reduction module (with the grinding wheel post removed).

Fig. 16 is a schematic structural view of the first driving mechanism.

Fig. 17 is a schematic view of the position structure of the first driving mechanism in the gantry crane column.

Fig. 18 is a schematic structural view of the stationary base, the rotary platform, and the parts above the rotary platform.

Fig. 19 is a schematic structural view of the stationary base, the rotary platform, and the driving mechanism thereof.

Fig. 20 is a cross-sectional view taken along line C-C of fig. 19.

Fig. 21 is a schematic structural view of the fixing base.

Fig. 22 is a half cross-sectional view of the stationary base.

Fig. 23 is a half cross-sectional view of a rotary platform.

Fig. 24 is a schematic structural view of the second driving mechanism in the stationary base.

Fig. 25 is a schematic structural view of the second driving mechanism.

Fig. 26 is a schematic structural view of the stationary support and its upper parts.

Fig. 27 is a front view of the stationary support base and the parts thereon (the column cover of the first column removed).

Fig. 28 is a top view of the stationary support base and its upper parts.

Fig. 29 is a sectional view taken along line D-D in fig. 28.

Fig. 30 is an exploded view of the connection structure of the electro-hydraulic putter and the ball socket.

Fig. 31 is a schematic view of the structure of the table.

FIG. 32 is a schematic view of the structure of a disposable processing-formable part of the present invention. The reference numerals in the drawings denote:

1. a fixed base; 101. a swivel hole; 102. a circular boss; 1021. a lower half groove; 2. an outer cover; 3. a first upright; 4. a gantry crane; 41. a gantry crane beam; 411. a beam cover; 412. a beam housing; 4121. a rotating chamber; 4122. a fixed cavity; 4123. a hanging fixing ring; 42. a gantry crane upright; 5. a work table; 51. an extension rod; 6. fixing the supporting seat; 7. an additive module; 71. a laser head; 72. feeding a wire head; 73. a laser joint; 74. a material adding sliding block; 75. a laser column; 8. grinding the material reduction module; 81. a small grinding wheel; 82. grinding wheel upright posts; 821. wedge-shaped grooves; 84. a column joint; 85. a grinding wheel motor; 86. a grinding wheel swinging shaft; 87. a grinding wheel swing column; 88. a bevel gear; 89. a material reduction sliding block; 9. rotating the platform; 901. a lower rotary rod; 902. a round platform cover is arranged; 9021. an upper half groove; 10. sliding balls; 11. a second driving mechanism; 111. connecting a bearing; 112. a bearing baffle; 113. driven wheel; 114. a driving wheel; 115. a second driving motor; 17. a first driving mechanism; 171. a first driving motor; 172. a first support base; 173. a first ball screw; 174. a first lead screw connection; 18. a third driving mechanism; 181. a third driving motor; 182. a third support base; 183. a third ball screw; 184. a coupling; 19. a fifth driving mechanism; 191. a fifth driving motor; 192. a fifth supporting seat; 193. a fifth ball screw; 194. a fifth screw connection; 20. an electro-hydraulic push rod; 201. a ball pin; 22. a fourth driving mechanism; 221. a disc bevel gear; 222. a driving bevel gear; 223. a fourth driving motor; 224. a hanging frame; 2241. a suspension support portion; 2242. an upper supporting round table part; 2243. a lower supporting round table part; 22431. a beam groove; 225. a rolling bearing; 23. a wire feeding module; 231. a large wire feeding roller; 232. a large roller bracket; 24. a gear protection cover; 26. a material fixing mechanism; 261. a small roller; 262. a small roller bracket; 27. a linkage beam; 28. ball pin base.

Detailed Description

The invention will be described in further detail with reference to the drawings and the specific examples. The instruments or materials used in the present invention are commercially available unless otherwise specified.

Example 1:

as shown in fig. 1 to 31, a double-station synchronous machining device for increasing and decreasing materials of a shaft center variable revolving body comprises a fixed base 1, a first upright post 3, a gantry crane 4, an material adding module 7, a revolving platform 9, a grinding material reducing module 8, a workbench 5, an electric hydraulic push rod 20 and a linkage beam 27; the gantry crane 4 comprises a gantry crane beam 41 and gantry crane upright posts 42, and the gantry crane upright posts 42 are positioned at two ends of the gantry crane beam 41 and are fixed on the fixed base 1; a first driving mechanism 17 for driving the gantry crane beam 41 to move up and down is arranged in the gantry crane upright post 42; a linkage beam 27 is arranged below the gantry crane beam 41, a fourth driving mechanism 22 is arranged in the gantry crane beam 41, and the linkage beam 27 rotates relative to the gantry crane beam 41 under the drive of the fourth driving mechanism 22; the material adding module 7 and the grinding material reducing module 8 are arranged below the linkage beam 27, a third driving mechanism 18 is arranged in the linkage beam 27, the third driving mechanism 18 is used for driving the material adding module 7 and the grinding material reducing module 8 to synchronously and horizontally move relative to the linkage beam 27, and the material adding module 7 and the grinding material reducing module 8 respectively perform material adding processing and material reducing processing on workpieces on the workbench 5; the rotary platform 9 is arranged on the fixed base 1, and a second driving mechanism 11 for driving the rotary platform 9 to rotate is arranged in the fixed base 1; the outer sides of at least two end parts of the workbench 5 are correspondingly provided with first upright posts 3, and the first upright posts 3 are fixed above the rotary platform 9; a fifth driving mechanism 19 for driving the end part of the workbench 5 to move up and down is arranged in the first upright post 3, the fifth driving mechanism 19 is connected with the end part of the workbench 5 through an electro-hydraulic push rod 20, and the upward or downward movement displacement of different end parts of the workbench 5 is unequal, so that the workbench 5 is inclined.

In the invention, the end part of the workbench 5 is driven to move upwards or downwards by the fifth driving mechanism 19 in the first upright post 3, the fifth driving mechanism 19 respectively controls the displacement of different end parts of the workbench 5, and when the displacement is unequal, the workbench 5 is inclined.

According to the invention, by means of the inclination movement of the workbench 5, the rotary movement of the rotary platform 9 drives the workbench 5 to rotate, the material adding module 7 and the material reducing grinding module 8 are rotated to any direction of a workpiece through the rotary movement of the linkage beam 27, and the material adding module 7 and the material reducing grinding module 8 are matched with synchronous horizontal movement, so that the requirement of multi-direction machining of complex parts is met, and various complex parts with different curved surfaces, particularly a rotary body with variable axle centers, can be machined. The material adding module 7 and the grinding material reducing module 8 on the linkage beam 27 can move along the linkage beam 27, so that the freedom degree of the working module is greatly widened, and the production flexibility of the whole equipment is improved.

As shown in fig. 3-10, the gantry crane beam 41 comprises a beam housing 412, the beam housing 412 is provided with a rotating cavity 4121 penetrating through the upper surface and the lower surface of the beam housing 412 and a fixed cavity 4122 communicated with the rotating cavity 4121, and a hanging fixed ring 4123 is horizontally arranged at the bottom of the rotating cavity 4121 in the circumferential direction; the fourth driving mechanism 22 comprises a disc bevel gear 221, a driving bevel gear 222, a hanging frame 224 and a rolling bearing 225 which are arranged in the rotating cavity 4121, and a fourth driving motor 223 which is arranged in the fixed cavity 4122, wherein the hanging frame 224 is arranged on the hanging fixing ring 4123, the outer wall of the hanging frame 224 is connected with the inner wall of the rotating cavity 4121 in a matching way through the rolling bearing 225, the disc bevel gear 221 is fixed on the hanging frame 224 and matched with the driving bevel gear 222, the fourth driving motor 223 drives the driving bevel gear 222 to rotate so as to drive the hanging frame 224 to rotate, and the linkage cross beam 27 is fixed on the lower part of the hanging frame 224. In this embodiment, the gantry crane beam 41 further includes a beam cover 411, and the beam cover 411 is disposed on the beam housing 412 to seal the rotating chamber 4121 and the fixed chamber 4122.

As shown in fig. 7-9, the suspension bracket 224 includes a suspension supporting portion 2241, an upper supporting circular table portion 2242 and a lower supporting circular table portion 2243 are respectively disposed on the upper surface and the lower surface of the suspension supporting portion 2241, the linkage beam 27 is fixed at the bottom of the lower supporting circular table portion 2243, the inner hole of the disc bevel gear 221 is sleeved outside the upper supporting circular table portion 2242 and fixed, the suspension supporting portion 2241 is disposed on the suspension fixing ring 4123, the outer wall of the suspension supporting portion 2241 is matched with the inner wall of the rotating cavity 4121 through the rolling bearing 225, the rotation of the suspension bracket 224 is realized, and the sliding friction is reduced. The lower supporting circular table 2243 is provided with a beam groove 22431 for placing the fixed linkage beam 27, so that the disassembly and maintenance are convenient.

As shown in fig. 4-6, the rotating chamber 4121 is further provided with a wire feeding module 23, and the wire feeding module 23 includes a wire feeding large roller 231 and large roller brackets 232, wherein the large roller brackets 232 are positioned at two ends of the wire feeding large roller 231 and are fixed on webs of the bevel disk 221. The wire feeding module 23 is used for storing substitute processing material wires and synchronously conveying the substitute processing material wires during working. In this embodiment, the wire feeding large rollers 231 are symmetrically arranged in the gantry crane beam 41, ensure that the wire feeding is not wound when rotating the disc bevel gear 221, and can offset centrifugal force. In this embodiment, a through hole is formed in the suspension 224, and the wire feeding module 23 sends the wire to the through hole and reaches the position of the material adding module 7 for material adding processing.

As shown in fig. 4, in this embodiment, a gear protection cover 24 is further disposed in the rotating cavity 4121, the gear protection cover 24 is located between the wire feeding module 23 and the gear portion of the bevel disk gear 221, and separates the wire feeding module 23 from the gear portion of the bevel disk gear 221, and the lower end of the gear protection cover 24 is located on the web of the bevel disk gear 221, and the upper end of the gear protection cover abuts against the beam cover 411, so that the bevel disk gear 221 can be stabilized.

As shown in fig. 10, the rotating chamber 4121 is located in the middle of the gantry beam 41 and is in a disc shape, and the fourth driving motor 223 on one side of the gantry beam 41 drives the disc bevel gear 221 in the rotating chamber 4121 of the gantry beam 41 to rotate, and the suspension bracket 224 and the inner wall of the rotating chamber 4121 are connected by the rolling bearing 225, so that the material adding module 7 and the grinding material reducing module 8 below the suspension bracket 224 rotate around the Z axis relative to the gantry beam 41.

As shown in fig. 16 and 17, the first driving mechanism 17 includes a first driving motor 171, a first supporting seat 172, a first ball screw 173, and a first screw connecting member 174, where the first ball screw 173 is vertically disposed, the first driving motor 171 is used to drive the first ball screw 173 to rotate, the first supporting seat 172 is supported at the end of the first ball screw 173, the first screw connecting member 174 is sleeved outside the first ball screw 173, and the first screw connecting member 174 extends from inside the gantry crane upright 42 to outside the gantry crane upright 42 and is connected with the end of the gantry crane beam 41.

The movement of the gantry beam 41 in the Z-axis direction is controlled by a first ball screw 173 in the gantry column 42. The gantry crane beam 41 moves up and down in the Z-axis direction with the material adding module 7 and the grinding material subtracting module 8 under the fixing and driving actions of the first screw connectors 174 on the two sides. In this embodiment, the first driving mechanism 17 is located at the upper half of the gantry crane column 42, and the first driving motor 171 is a servo motor and drives two first ball screws 173 respectively. The upper half part of the gantry crane upright post 42 is provided with an upright post inner hole, the first driving mechanism 17 is positioned in the upright post inner hole, one side of the gantry crane upright post 42, which is close to the gantry crane cross beam 41, is provided with a front groove for the first screw rod connecting piece 174 to pass through, the front groove is communicated with the upright post inner hole, and the front groove and the first ball screw 173 are arranged in a staggered manner, so that the abrasion dust is prevented from directly entering the front groove to influence the transmission of the first driving mechanism 17. The column bore is divided by a horizontally disposed partition plate into two parts, one part accommodating the first drive motor 171 and the other part accommodating other important parts of the first drive mechanism 17.

As shown in fig. 12, the third driving mechanism 18 includes a third driving motor 181, a third supporting seat 182, a third ball screw 183, a third screw nut and a coupling 184, the two third ball screws 183 with opposite rotation directions are horizontally arranged and connected by the coupling 184, the third driving motor 181 is used for driving the third ball screw 183 to rotate, the third supporting seat 182 is supported at the end of the third ball screw 183, the two third screw nuts are respectively sleeved outside the third ball screw 183, and the third screw nuts are respectively connected with the material adding module 7 and the grinding material subtracting module 8.

In other embodiments, the additive module 7 and the grinding and subtracting module 8 share the same third drive mechanism 18 of the same gantry beam 41. When the third driving motor 181 is started, the material adding module 7 and the grinding and material subtracting module 8 are close to or far away from each other, and move towards or away from each other as a whole. Each third driving mechanism 18 comprises a third ball screw 183, the material adding module 7 and the grinding material subtracting module 8 are respectively assembled on the third ball screws 183 with opposite rotation directions, the third ball screw 183 comprises two horizontal screws, the coupler 184 is an elastic coupler, the material adding module 7 and the grinding material subtracting module 8 are respectively installed on the two horizontal screws through third screw nuts, and the rotation directions of the two third screw nuts are opposite (the rotation directions of the third screw nuts and the horizontal screws to which the third screw nuts belong are the same). The third driving motor 181 drives one of the horizontal screws to rotate, and transmits torque to the other horizontal screw through the elastic coupling. When the third driving motor 181 rotates forward, two third screw nuts on the horizontal screw gradually approach each other; when the third driving motor 181 is reversed, the two third screw nuts on the horizontal screw are gradually separated. The gantry crane beam 41 is in transmission connection with the horizontal screw rod through the third driving motor 181, and controls the two third screw nuts which are reversely matched to move in opposite directions, so that the linkage effect of the material adding module 7 and the grinding material reducing module 8 is realized.

In other embodiments, two third driving motors 181 are used on the same linkage beam 27 to drive the material adding module 7 and the grinding material subtracting module 8 respectively, the third ball screws 183 of the two third driving mechanisms 18 rotate in opposite directions and have no coupling 184, and the third driving motors 181 in the linkage beam 27 are used to control the movement of the material adding module 7 or the grinding material subtracting module 8 in the horizontal direction. Two groups of third driving mechanisms 18 are arranged in one linkage beam 27 and are used for controlling the material adding module 7 and the grinding material subtracting module 8 respectively, and compared with the mode that the same third driving mechanisms 18 are adopted for driving the material adding module 7 and the grinding material subtracting module 8 simultaneously, the two groups of third driving mechanisms 18 reduce the bearing capacity of each third ball screw 183 and enhance the positioning accuracy and stability in the working process.

As shown in fig. 15, the material adding module 7 comprises a laser head 71 and a wire feeding head 72, the wire feeding head 72 is used for feeding raw materials to the lower part of the laser head 71 for melting, the laser emission direction of the laser head 71 is perpendicular to the upper surface of the workbench 5 and forms an included angle alpha with the wire feeding direction of the wire feeding head 72, and the included angle alpha is 0 < alpha < 90 degrees.

The material adding module 7 further comprises a laser connector 73, a material adding sliding block 74 and a laser upright 75, wherein the material adding sliding block 74 is connected with a third ball screw 183, the laser connector 73 is connected between the material adding sliding block 74 and the laser upright 75, and the laser head 71 and the wire feeding head 72 are positioned below the laser upright 75. In this embodiment, the material-adding slider 74 is provided with a through hole, the inner wall of the through hole is provided with threads, the material-adding slider 74 is directly sleeved on the third ball screw 183, and the material-adding slider 74 passes through the gantry crane beam 41 from the third ball screw 183 to be connected with the laser joint 73.

As shown in fig. 15, a sizing mechanism 26 is arranged above the feed inlet of the spinneret 72, and the sizing mechanism 26 comprises a small roller bracket 262 and two small rollers 261, wherein the two small rollers 261 are supported on the small roller bracket 262 and are used for positioning raw material wires. And the small roller 261 of the sizing mechanism 26 is provided with a circular groove with the same size as the wire, thereby enhancing the accuracy.

The laser emission direction of the laser head 71 (the laser emission direction is perpendicular to the upper surface of the composite working platform) and the wire feeding direction of the wire feeding head 72 form a certain included angle α, the included angle α between the laser emission direction and the wire feeding direction is 45 ° (in other embodiments, 0 < α < 90 ° (the same or similar technical effects can be achieved), when the laser emitter emits laser to generate a molten pool on the surface of a workpiece, the wire feeding module 23 synchronously feeds wires, materials are fed into the molten pool, processing efficiency is improved, and synchronous wire feeding during additive processing is realized. The small rollers 261 are arranged on the wire feeding heads 72, round grooves corresponding to wires are arranged in the middle of the small rollers 261, accuracy is improved, and wire feeding holes for raw material wires to pass through are formed above the wire feeding heads 72 below the two small rollers 261.

According to the invention, through reasonable coordination of inclination movement of the workbench 5, rotation movement of the rotary platform 9, synchronous horizontal movement of the material adding module 7 and the grinding material subtracting module 8, rotation movement of the linkage beam 27 and adjustment of the angle alpha of the laser head 71 and the wire feeding head 72 in the material adding module 7, the material adding module 7 and the grinding material subtracting module 8 only need to perform horizontal movement of a short distance on the gantry crane beam 41 (synchronous linkage can be performed between the two modules and also can perform independent movement of the two modules, the relative movement mode is very flexible), and real-time synchronous processing of two stations (the two stations keep a space of half revolution period of a revolution body and no additional station adjustment) of a complex structural member can be effectively realized. The synchronous processing mode can flexibly and efficiently finish high-precision material reduction processing of the inner side surface and the outer side surface of a complex structural member, strictly controls the overall mass center height of the equipment to improve stability under the design of reasonable multi-degree-of-freedom independent control motion coordination and transmission arrangement, basically realizes gapless fusion of two stations, saves a large amount of working hours and energy consumption for station conversion, further shortens the processing flow and the production period, and highlights the advantages of short flow and near-net forming of the multi-station integrated synchronous composite processing method.

As shown in fig. 13 and 14, the grinding and material reducing module 8 comprises a grinding wheel column 82, a small grinding wheel 81 which is positioned outside the grinding wheel column 82 and is used for milling or grinding the side surface of a workpiece, a grinding wheel motor 85, a grinding wheel swinging shaft 86 and a grinding wheel swinging column 87 which are positioned in the grinding wheel column 82, wherein the grinding wheel motor 85 drives the grinding wheel swinging shaft 86 which is horizontally arranged to rotate so as to drive the small grinding wheel 81 to swing, and the upper end and the lower end of the grinding wheel swinging column 87 are respectively connected with the grinding wheel swinging shaft 86 and the small grinding wheel 81.

The grinding and reducing module 8 further comprises a stand column joint 84, two bevel gears 88 and a reducing slide block 89 which are in meshed transmission, the reducing slide block 89 is connected with a third ball screw 183, the upper end of the stand column joint 84 is connected with the reducing slide block 89, the lower end of the stand column joint 84 is connected with a grinding wheel stand column 82, a grinding wheel motor 85 is coaxial with one of the bevel gears 88, the other bevel gear 88 is fixedly connected with the grinding wheel stand column 82 through a grinding wheel swinging shaft 86 which is transversely arranged, the grinding wheel swinging shaft 86 is vertically connected with the grinding wheel swinging shaft 87, and the lower end of the grinding wheel swinging shaft 87 is connected with the small grinding wheel 81, so that swinging of the small grinding wheel 81 is realized by driving the grinding wheel swinging shaft 86, and milling precision of a curved surface is enhanced to meet the side angle of a workpiece.

The material reducing slide block 89 is provided with a through hole, the inner wall of the through hole is provided with threads, the material reducing slide block 89 is directly sleeved outside the third ball screw 183, and the material reducing slide block 89 penetrates through the gantry crane beam 41 from the third ball screw 183 to be connected with the upright post joint 84. The bottom of the grinding wheel upright post 82 is provided with a wedge-shaped groove 821, so that the rotation of the small grinding wheel 81 is ensured and a certain sealing effect is achieved.

The laser stand column 75 and the grinding wheel stand column 82 are of modularized design, and are convenient to install, maintain and replace.

As shown in fig. 18 to 25, the second driving mechanism 11 includes a connecting bearing 111 and a second driving motor 115, a swivel hole 101 is provided on the upper surface of the stationary base 1, and a circular boss 102 is provided on the outer side in the circumferential direction of the swivel hole 101; the rotary platform 9 comprises an upper round platform cover 902 and a lower rotary rod 901 vertically connected below the upper round platform cover 902, the upper round platform cover 902 is covered on the round boss 102, the lower rotary rod 901 is inserted into the rotary hole 101, the inner ring of the connecting bearing 111 is sleeved on the outer wall of the lower rotary rod 901, the outer ring of the connecting bearing 111 is connected with the side wall of the rotary hole 101, and the second driving motor 115 drives the lower rotary rod 901 to rotate so as to drive the upper round platform cover 902 to rotate.

The processing space above the rotary platform 9 and the transmission space below the fixed base 1 realize sealing separation through the inserted cross dislocation matching mode of the upper round platform cover 902 and the round boss 102, and effectively avoid abnormal abrasion of precision transmission parts caused by infiltration and accumulation of various scraps generated in processing through the sealing design of the transmission system without interference to the movement of the system parts, thereby ensuring the processing precision in the equipment service period and the effective service life. The driving wheel 114 and the driven wheel 113 of the driving part of the upper round platform cover 902 are in transmission fit by adopting conical gears, so that the transmission precision and the controllability are high.

In this embodiment, the rotary platform 9 is disposed at the center of the fixed base 1, the fixed base 1 includes an upper surface and a side surface disposed below the outer side of the upper surface, and the driven wheel 113, the driving wheel 114, and the second driving motor 115 are mounted in a space enclosed by the upper surface and the side surface of the fixed base 1, that is, the driven wheel 113, the driving wheel 114, and the second driving motor 115 are mounted below the upper surface of the fixed base 1, the driven wheel 113 is a disk bevel gear, the driving wheel 114 is a bevel gear, and the second driving motor 115 is a servo motor, and the purpose of controlling the rotary platform 9 to rotate is achieved through meshing transmission of the servo motor and the bevel gear.

In this embodiment, the lower pivoting lever 901 of the pivoting platform 9 is provided with a bearing retainer 112 between the connecting bearing 111 and the driven pulley 113, and the bearing retainer 112 is fixed to the fixed base 1.

The lower bottom surface of the upper round platform cover 902 is circumferentially provided with an upper half groove 9021, the upper surface of the round boss 102 is circumferentially provided with a lower half groove 1021, the upper half groove 9021 and the lower half groove 1021 are matched to form a sliding track, and a plurality of sliding balls 10 are arranged in the sliding track. The relative rotation of the upper cap 902 and the boss 102 uses the sliding ball 10 to slide in the sliding track to achieve a low motion resistance fit. In this embodiment, the inner circle side of the sliding track is slightly lower than the outer circle side, the sliding track is meshed with the sliding ball 10, rolling friction is adopted between the round boss 102 and the upper round platform cover 902, so that the friction force is reduced, the energy consumption is reduced, the precision is improved, the machining space above the rotating platform 9 is isolated from the transmission space below the rotating platform 9, grinding dust cannot enter the transmission space, and the sealing performance is greatly improved.

As shown in fig. 26 to 31, one end of the electro-hydraulic push rod 20 is connected to one end of the table 5, the other end is provided with a ball stud 201, the ball stud 201 is cooperatively connected to one end of the ball socket 28, and the other end of the ball socket 28 is connected to the fifth driving mechanism 19.

As shown in fig. 31, at least two ends of the table 5 are provided with extension rods 51, and the extension rods 51 are connected to the rod ends of the electro-hydraulic rod 20 in a mating manner. In this embodiment, four first upright posts 3 are included, a fifth driving mechanism 19 for driving four end portions of the workbench 5 is disposed in each first upright post 3, the fifth driving mechanisms 19 independently drive the corresponding extension rods 51 of the workbench 5, and the workbench 5 is tilted by different angles through movement of different extension rods 51 in the height direction, and the extension rods 51 are cylindrical so as to be matched with the push rods of the electro-hydraulic push rods 20. In other embodiments, the table 5 may be provided with a different number of extension bars 51 to achieve a different inclination angle depending on the complexity of the parts.

In this embodiment, be fixed in on the rotary platform 9 through a fixed support seat 6, first stand 3 bottom is connected fixedly with fixed support seat 6, and workstation 5 and fixed support seat 6 interval set up, prevent on the one hand that rotary platform 9 size is undersize, are not enough to place a plurality of first stands 3 and workstation 5, have broken through the restriction of rotary platform 9 size, on the other hand be convenient for whole replacement not unidimensional first stand 3 and workstation 5.

As shown in fig. 27, the fifth driving mechanism 19 includes a fifth driving motor 191, a fifth supporting seat 192, a fifth ball screw 193 and a fifth screw connecting piece 194, the fifth ball screw 193 is vertically disposed, the fifth driving motor 191 is used for driving the fifth ball screw 193 to rotate, the fifth supporting seat 192 is supported at two ends of the fifth ball screw 193, the fifth screw connecting piece 194 is sleeved outside the fifth ball screw 193, and the fifth screw connecting piece 194 extends from the inside of the first upright 3 to the outside of the first upright 3 and is connected with the fixed end of the electro-hydraulic push rod 20.

In this embodiment, the first upright 3 is provided with an upright front groove on a side close to the workbench 5, the upright front groove is used for the fifth screw rod connecting piece 194 to pass through, the upright front groove is communicated with the inner hole of the first upright 3, and the upright front groove and the fifth ball screw 193 are arranged in a staggered manner, so that the transmission of the fifth driving mechanism 19 is prevented from being influenced by abrasive dust.

The fifth screw connection 194 is connected to the fixed end of the electro-hydraulic ram 20. In this embodiment, the fixed end of the electro-hydraulic push rod 20 is provided with a ball pin 201 near the side of the fifth screw connection 194, and the fifth screw connection 194 is provided with a ball pin seat 28 matching with the ball pin 201 near the fixed end of the electro-hydraulic push rod 20.

When manufacturing a revolving body part, especially an elbow revolving body part, after the second driving mechanism 11 is driven to incline the worktable 5, the actual revolving central axis line deviates from the preset central axis, and the electric hydraulic push rod 20 is adopted to push the worktable 5, so as to finely adjust the position of the worktable 5, and enable the actual central axis line to coincide with the preset central axis line (ensure that the working center and the machining center coincide after inclination).

The movement of each end of the table 5 in the Z-axis direction is controlled by the fifth ball screw 193 in the first column 3, and the tilting movement of the table 5 is realized by the difference in the movement distance of the different ends in the Z-axis direction. The ends of the table 5 are moved up and down in the Z-axis direction by the fixing and driving of the fifth screw link 194. In this embodiment, the fifth driving motor 191 is a servo motor, and drives the fifth ball screw 193. An inner hole is formed in the first upright 3, the fifth driving mechanism 19 is located in the inner hole, a front groove for the fifth screw rod connecting piece 194 to pass through is formed in one side of the first upright 3 close to the workbench 5, the front groove is communicated with the inner hole, the front groove and the fifth ball screw 193 are arranged in a staggered mode, and grinding dust is prevented from directly entering the front groove to affect transmission of the fifth driving mechanism 19. The bore is divided by a horizontally disposed partition plate into two parts, one part accommodating the fifth drive motor 191 and the other part accommodating other important parts of the fifth drive mechanism 19.

As shown in fig. 1, the device further comprises a housing 2, wherein the housing 2 is fixed on the fixed base 1, and the workbench 5 is used for grinding the material reduction module 8 and the material addition module 7 from the outside. In this embodiment, an outer cover 2 is covered above the fixed base 1, a storage opening is formed in the outer cover 2, and a storage door capable of closing and opening the storage opening is mounted on the storage opening. In this embodiment, the outer cover 2 is a transparent cover, so as to observe the working condition of the core component, and on the other hand, the outer cover 2 is used for sealing and protecting the core component, isolating the working environment and the external environment in the equipment, and improving the processing quality and the safety of operators.

The outer cover 2 is provided with an air inlet hole and an air outlet hole which are used for vacuumizing or introducing protective gas into the outer cover 2. In this embodiment, the air inlet and the air outlet are respectively disposed on the side wall of the housing 2 and are respectively disposed near the upper portion and the lower portion of the housing 2. Generally, inert gas or protective gas such as carbon dioxide is heavier than air, the air inlet is arranged at the lower part, the air outlet hole is arranged at the upper part, the air is slowly introduced in the processing process, and the inside of the outer cover 2 is in a negative high-pressure state.

A machining method of a double-station synchronous machining device for increasing and decreasing materials of a rotary body with a changeable axle center comprises the following steps of

Placing a workpiece on a workbench 5, starting an additive module 7 to emit laser to generate a molten pool on the surface of the workpiece, sending raw materials to the lower part of the additive module 7, melting and solidifying on the workpiece at the molten pool under the action of the laser, starting a grinding and reducing module 8 to synchronously reduce materials on the side surface of the solidified workpiece, changing the relative positions of the workpiece on the workbench 5, the additive module 7 and the grinding and reducing module 8, moving the additive module 7 upwards after reaching a preset thickness layer, and starting the additive processing of the next thickness layer;

changing the relative positions of the workpiece and the additive module 7, the grinding and subtractive module 8 on the table 5 comprises the following ways:

mode a: starting a fifth driving mechanism 19 to drive the workbench 5 to incline;

mode B: starting a third driving mechanism 18 to drive the material adding module 7 and the grinding material reducing module 8 to synchronously move horizontally;

mode C: the second driving mechanism 11 is started to drive the rotary platform 9 to rotate;

mode D: turning on the fourth driving mechanism 22 to drive the linkage beam 27 to rotate;

the material reduction processing specifically comprises the following steps: rotating the small grinding wheel 81 of the material reduction module 8 until the small grinding wheel is attached to the side surface of the workpiece to grind the side surface of the workpiece;

the specific steps of moving the additive module 7 upwards include: the first driving mechanism 17 in the gantry crane upright 42 is started to drive the gantry crane beam 41 to move upwards.

The invention can process and shape a revolving body with a changeable axle center at one time, in particular to a pipe component with a curved surface with radian, wherein fig. 32 is a schematic diagram of a typical part, fig. 32 (a) is a schematic diagram of a three-dimensional structure of the part, fig. 32 (b) is a front view of the part, and fig. 32 (c) is a side view of the part.

While the invention has been described in terms of preferred embodiments, it is not intended to be limiting. Many possible variations and modifications of the disclosed technology can be made by anyone skilled in the art, or equivalent embodiments with equivalent variations can be made, without departing from the scope of the invention. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention shall fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a synchronous processingequipment of increase and decrease material duplex of axle center changeable solid of revolution which characterized in that: the device comprises a fixed base (1), a first upright post (3), a gantry crane (4), an additive module (7), a rotary platform (9), a grinding and reducing module (8), a workbench (5), an electric hydraulic push rod (20) and a linkage cross beam (27);

The gantry crane (4) comprises a gantry crane beam (41) and gantry crane upright posts (42), and the gantry crane upright posts (42) are positioned at two ends of the gantry crane beam (41) and are fixed on the fixed base (1); a first driving mechanism (17) for driving the gantry crane cross beam (41) to move up and down is arranged in the gantry crane upright post (42);

a linkage beam (27) is arranged below the gantry crane beam (41), a fourth driving mechanism (22) is arranged in the gantry crane beam (41), and the linkage beam (27) rotates relative to the gantry crane beam (41) under the drive of the fourth driving mechanism (22);

the material adding module (7) and the grinding material reducing module (8) are arranged below the linkage beam (27), a third driving mechanism (18) is arranged in the linkage beam (27), the third driving mechanism (18) is used for driving the material adding module (7) and the grinding material reducing module (8) to synchronously and horizontally move relative to the linkage beam (27), and the material adding module (7) and the grinding material reducing module (8) respectively perform material adding processing and material reducing processing on workpieces on the workbench (5);

the rotary platform (9) is arranged on the fixed base (1), and a second driving mechanism (11) for driving the rotary platform (9) to rotate is arranged in the fixed base (1);

the outer sides of at least two end parts of the workbench (5) are respectively provided with a first upright post (3), the first upright posts (3) are fixed above the rotary platform (9), a fifth driving mechanism (19) for driving the end parts of the workbench (5) to move up and down is arranged in the first upright posts (3), and the fifth driving mechanism (19) is connected with the end parts of the workbench (5) through an electric hydraulic push rod (20); the upward or downward movement displacement of the different end parts of the workbench (5) is unequal, so that the workbench (5) is inclined;

The gantry crane beam (41) comprises a beam shell (412), a rotating cavity (4121) penetrating through the upper surface and the lower surface of the beam shell (412) is formed in the beam shell (412), and a hanging fixing ring (4123) is horizontally arranged at the periphery of the bottom of the rotating cavity (4121);

the fourth driving mechanism (22) comprises a disc bevel gear (221), a driving bevel gear (222), a hanging frame (224) and a rolling bearing (225) and a fourth driving motor (223), wherein the hanging frame (224) is arranged on a hanging fixing ring (4123), the outer wall of the hanging frame (224) is connected with the inner wall of a rotating cavity (4121) in a matched mode through the rolling bearing (225), the disc bevel gear (221) is fixed on the hanging frame (224) and matched with the driving bevel gear (222), the fourth driving motor (223) drives the driving bevel gear (222) to rotate so as to drive the hanging frame (224) to rotate, and a linkage cross beam (27) is fixed on the lower portion of the hanging frame (224);

suspension frame (224) are including hanging supporting part (2241) upper and lower surface is equipped with respectively and supports round platform portion (2242) and lower support round platform portion (2243), linkage crossbeam (27) are fixed in lower support round platform portion (2243) bottom the hole cover of disc bevel gear (221) is located and is supported round platform portion (2242) outward and fixed, hanging supporting part (2241) is placed on hanging solid fixed ring (4123), hanging supporting part (2241) outer wall passes through antifriction bearing (225) and rotatory chamber (4121) inner wall cooperation, has realized the rotation of suspension frame (224).

2. The duplex lumber-reducing synchronous machining apparatus according to claim 1, wherein: the second driving mechanism (11) comprises a connecting bearing (111) and a second driving motor (115), a rotary hole (101) is formed in the upper surface of the fixed base (1), and a round boss (102) is arranged on the outer side of the periphery of the rotary hole (101);

the rotary platform (9) comprises an upper round platform cover (902) and a lower rotary rod (901) vertically connected to the lower part of the upper round platform cover (902), the upper round platform cover (902) is covered on the round boss (102), the lower rotary rod (901) is inserted into the rotary hole (101), an inner ring of the connecting bearing (111) is sleeved on the outer wall of the lower rotary rod (901), an outer ring of the connecting bearing (111) is connected with the side wall of the rotary hole (101) in a matched mode, and the second driving motor (115) drives the lower rotary rod (901) to rotate so as to drive the upper round platform cover (902) to rotate.

3. The duplex lumber-reducing synchronous machining apparatus according to claim 2, wherein: the lower bottom surface circumference of going up round platform lid (902) is equipped with first half groove (9021), circle boss (102) upper surface circumference is equipped with second half groove (1021), first half groove (9021) and second half groove (1021) cooperate and form the slip track, be equipped with a plurality of slip balls (10) in the slip track.

4. The duplex lumber-reducing synchronous machining apparatus according to claim 1, wherein: the device comprises a ball pin seat (28), one end of the electric hydraulic push rod (20) is connected with one end of the workbench (5), the other end of the electric hydraulic push rod is provided with a ball pin (201), the ball pin (201) is connected with the ball pin seat (28), and the other end of the ball pin seat (28) is connected with a fifth driving mechanism (19).

5. The duplex lumber-reducing synchronous machining apparatus according to claim 4, wherein: the fifth driving mechanism (19) comprises a fifth driving motor (191), a fifth supporting seat (192), a fifth ball screw (193) and a fifth screw connecting piece (194), the fifth ball screw (193) is vertically arranged, the fifth driving motor (191) is used for driving the fifth ball screw (193) to rotate, the fifth supporting seat (192) is supported at two ends of the fifth ball screw (193), and the fifth screw connecting piece (194) is sleeved outside the fifth ball screw (193); the first upright post (3) is provided with a front groove at one side close to the workbench (5), the fifth screw rod connecting piece (194) penetrates through the front groove to be connected with the ball pin seat (28), and the fifth ball screw rod (193) is arranged in a staggered mode with the front groove.

6. The duplex machining apparatus for increased or decreased material according to any one of claims 1 to 4, wherein: the third driving mechanism (18) comprises a third driving motor (181), a third supporting seat (182), a third ball screw (183) and a coupler (184), wherein the third ball screws (183) with opposite rotation directions are horizontally arranged and connected through the coupler (184), the third driving motor (181) is used for driving the third ball screw (183) to rotate, the third supporting seat (182) is supported at the end part of the third ball screw (183), and the material adding module (7) and the material grinding and reducing module (8) are respectively connected to the two third ball screws (183).

7. The duplex machining apparatus for increased or decreased material according to any one of claims 1 to 4, wherein: the grinding material reduction module (8) comprises a grinding wheel upright post (82), a small grinding wheel (81) which is positioned outside the grinding wheel upright post (82) and used for milling or grinding the side surface of a workpiece, and a grinding wheel motor (85), a grinding wheel swinging shaft (86) and a grinding wheel swinging column (87) which are positioned in the grinding wheel upright post (82), wherein the grinding wheel swinging shaft (86) which is horizontally arranged is driven by the grinding wheel motor (85) to rotate so as to drive the small grinding wheel (81) to swing, and the upper end and the lower end of the grinding wheel swinging column (87) are respectively connected with the grinding wheel swinging shaft (86) and the small grinding wheel (81).

8. A machining method of the double-station synchronous machining device for increasing and decreasing material of the axis-variable rotation body according to any one of claims 1 to 7, characterized in that: comprises the following steps

Placing a workpiece on a workbench (5), starting an additive module (7) to emit laser to generate a molten pool on the surface of the workpiece, sending raw materials to the lower part of the additive module (7), melting and solidifying the raw materials on the workpiece at the molten pool under the action of the laser, starting a grinding and reducing module (8) to synchronously reduce materials on the side surface of the solidified workpiece, changing the relative positions of the workpiece on the workbench (5), the additive module (7) and the grinding and reducing module (8), and after reaching a preset thickness layer, moving the additive module (7) upwards to start the additive processing of the next thickness layer;

The relative positions of the workpiece on the workbench (5) and the material adding module (7) and the grinding material subtracting module (8) are changed in the following ways:

mode a: starting a fifth driving mechanism (19) to drive the workbench (5) to incline;

mode B: starting a third driving mechanism (18) to drive the material adding module (7) and the grinding material reducing module (8) to synchronously move horizontally;

mode C: starting a second driving mechanism (11) to drive the rotating platform (9) to rotate;

mode D: a fourth driving mechanism (22) is started to drive the linkage cross beam (27) to rotate;

the material reduction processing specifically comprises: rotating a small grinding wheel (81) of the grinding material reduction module (8) until the small grinding wheel is attached to the side surface of the workpiece to grind the side surface of the workpiece;

the specific steps of the upward movement additive module (7) comprise: a first driving mechanism (17) in the gantry crane upright post (42) is started to drive the gantry crane cross beam (41) to move upwards.