A vertical double-spindle five-axis linkage machining device

Abstract

The application discloses a vertical double-spindle five-axis linkage machining device, and relates to the technical field of workpiece machining equipment. The vertical double-spindle five-axis linkage machining device comprises a machine base, two rotating frames are rotationally connected to the top end of the machine base, a first driving element for driving the rotating frames to rotate is arranged on the machine base, two saddles are rotationally connected to the opposite sides of the two rotating frames, a rotating tray is rotationally connected to the top end of each saddle, a three-axis moving platform is arranged on the machine base, a spindle box is arranged on the three-axis moving platform, and a cutter is arranged on the spindle box. The vertical double-spindle five-axis linkage machining device can drive the second telescopic arm and the third telescopic arm to synchronously telescopically extend through a driving screw, can extend to different lengths according to requirements while maintaining a safe distance, can improve the working continuity of the device while preventing safety hazards, and can make a rotating action through a counterweight body to change the gravity center, thereby balancing the gravity center when the telescopic arm extends, eliminating the stress suffered by the telescopic arm, and improving the service life of each component.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of workpiece machining equipment, in particular to a vertical double-spindle five-axis linkage machining device. BACKGROUND

[0002] The five-axis linkage machining device is a machining center for machining high-precision complex surfaces, which realizes the spatial positioning and cutting machining of the workpiece through five independently controllable movement axes, and can machine any surface of the workpiece except the clamping surface. The common five-axis linkage machining center is mainly a single-spindle single-five-axis linkage structure, and the single-spindle single-five-axis linkage machining center cannot machine multiple workpieces at the same time, thereby causing low production efficiency. The double-spindle five-axis linkage machining device can machine two workpieces at the same time, and the production efficiency can be greatly improved compared with the single-spindle machining center.

[0003] Chinese invention patent CN117400009A discloses a vertical double-spindle five-axis linkage machining center, relating to the technical field of machining centers, comprising: a clamping piece, the clamping piece is detachably connected with a rotating tray through a connecting mechanism; a grabbing mechanism, the grabbing mechanism can be detachably connected with the clamping piece and can drive the clamping piece and the rotating tray to be detached or connected; a moving mechanism, the moving mechanism is arranged on a machine base and connected with the grabbing mechanism,

[0004] The above-mentioned device can drive the grabbing mechanism to move to the side of the rotating tray through the moving mechanism, then connect the grabbing mechanism with the clamping piece, and drive the clamping piece and the rotating tray to be detached through the grabbing mechanism, so that the clamping piece is separated from the rotating tray, and the machined workpiece on the clamping piece is away from the workpiece being machined, thereby effectively reducing the safety hazard during the unloading operation. However, the clamping piece and the rotating tray need to be frequently detached during the working process, which can easily cause wear of the connecting parts, increase the connection difficulty and the cost of maintenance and repair, and if the connecting part is worn and broken, the machining progress will be stalled, affecting the working continuity. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a vertical double-spindle five-axis linkage machining device, which solves the problem of frequent disassembly.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A vertical double-spindle five-axis linkage machining device, comprising a base, the top end of the base is rotatably connected with two rotating frames, the two rotating frames are mirror-symmetric to each other, the base is provided with a first driving member for driving the rotating frames to rotate, the opposite sides of the two rotating frames are rotatably connected with two saddles, one of the rotating frames is provided with a second driving member for driving the saddle to rotate, the top end of the saddle is rotatably connected with a rotating tray, the bottom end of the saddle is provided with a fourth driving member for driving the rotating tray to rotate, the base is provided with a three-axis moving platform, the three-axis moving platform is provided with a spindle box, and the spindle box is installed with a tool.

[0007] Preferably, the rotating frame comprises a receiving arm, a rotating counterweight is rotatably connected to the middle of the inner side of the receiving arm, second telescopic arms are rotatably connected to the two sides of the rotating counterweight, the second telescopic arms are slidably connected to the inner side of the receiving arm, a third telescopic arm is slidably connected to the inner side of the second telescopic arm, one end of the third telescopic arm away from the second telescopic arm is rotatably connected to one end of the saddle, and telescopic fixing assemblies are fixedly connected to the two ends of the receiving arm.

[0008] Preferably, the receiving arm comprises a first telescopic arm, a driving screw is arranged in the first telescopic arm along the sliding direction of the second telescopic arm, one end of the driving screw is fixedly connected with a support head, the driving screw is rotatably connected to the telescopic fixing assembly through the support head, and the first telescopic arm is provided with a third driving member for driving the driving screw to rotate.

[0009] Preferably, the support head is a rectangle with four arc sides in cross section, and the radii of the length and the width of the support head are different.

[0010] Preferably, the telescopic fixing assembly comprises a support plate, the support plate is fixedly connected to the inner side of one end of the first telescopic arm, the driving screw penetrates and is rotatably connected to the support plate through the shorter two arc sides of the support head, a staggered fixing plate is arranged on the side of the support plate away from the driving screw, a through fixing hole is arranged in the middle of the staggered fixing plate, the staggered fixing plate is sleeved on the outer surface of the support head through the fixing hole, the staggered fixing plate and the support head are arranged perpendicularly and are slidably connected to the inside of the first telescopic arm, a moving screw is fixedly connected to one end of the staggered fixing plate, one end of the moving screw away from the staggered fixing plate extends to the outside of the first telescopic arm, a control knob rotatably connected to the outer surface of the first telescopic arm is threadedly connected to the outer surface of the moving screw, and the diameter of the fixing hole is greater than the rotating diameter of the support head.

[0011] Preferably, the second telescopic arm comprises a telescopic body one, the outer surface of the telescopic body one is slidably connected to the inner side of the first telescopic arm, and the inner surface of the telescopic body one is slidably connected to the outer surface of the telescopic fixed assembly, one end of the telescopic body one is threadedly connected to the outer surface of the drive screw, a relay bevel gear is rotatably connected in the inner part of the telescopic body one, the relay bevel gear is threadedly connected to the outer surface of the drive screw, transmission bevel gears are engagedly connected to the upper and lower sides of the relay bevel gear, the transmission bevel gears are rotatably connected to the inner part of the telescopic body one, two rotating struts are rotatably connected to the side of the inner part of the telescopic body one away from the first telescopic arm, the two rotating struts correspond to the two transmission bevel gears respectively, and a synchronous chain is engagedly connected between the transmission bevel gears and the parallel rotating struts.

[0012] Preferably, the third telescopic arm comprises a telescopic body two, the outer surface of the telescopic body two is slidably connected to the inner side of the telescopic body one, and the inner side of the telescopic body two is fixedly connected with two fixed blocks, the two fixed blocks are fixedly connected to different sides of the outer surfaces of the two synchronous chains respectively.

[0013] Preferably, the rotating counterweight comprises a fan-shaped counterweight body rotatably connected to the middle part of the inner side of the first telescopic arm, two rotating grooves are formed in the circular arc surface of the counterweight body, rotating grooves are formed at both ends of the rotating grooves, a semicircular friction ring is rotatably arranged in the inner side of the rotating groove, a sliding rotating column is slidably connected to the inner side of the rotating groove, a connecting rod is fixedly connected to the outer surface of the sliding rotating column, and one end of the connecting rod away from the sliding rotating column is rotatably connected to one end of the friction ring close to the friction ring and away from the friction ring.

[0014] Preferably, the diameter of the rotating groove is greater than the groove width of the rotating groove, and a friction rubber strip is arranged in the inner side of the friction ring.

[0015] The vertical double-spindle five-axis linkage machining device is provided.

[0016] 1. The vertical double-spindle five-axis linkage machining device can drive the second telescopic arm through the drive screw, and continue to drive the third telescopic arm through the synchronous chain, so that the second telescopic arm and the third telescopic arm are synchronously telescoped, the workpiece after machining can be away from the machining area of the spindle box through the telescoping of the second telescopic arm and the third telescopic arm, a safe distance is kept, different lengths can be extended according to requirements, and the staff or automatic equipment can directly operate the rotating tray, so that the safety hidden danger is prevented and the working continuity of the device is improved.

[0017] 2. The vertical double-spindle five-axis linkage machining device, through the rotation of the counterweight, can drive the linkage rod to rotate and move synchronously while the second telescopic arm is extended, so that the counterweight body makes a rotating action to change the center of gravity, thereby balancing the center of gravity when the second telescopic arm and the third telescopic arm are extended, eliminating the stress received by the storage arm, and prolonging the service life of each component.

[0018] 3. The vertical double-spindle five-axis linkage machining device, through the rotation of the second telescopic arm side sliding rotating column into the rotating sliding slot, the rotating support point of the sliding rotating column is fixed, and the sliding rotating column on the other side in the machining direction is not affected, so that the counterweight body can rotate to change the center of gravity without affecting the other side, improving the linkage and smoothness between components.

[0019] 4. The vertical double-spindle five-axis linkage machining device, through the telescopic fixing assembly, the driving screw as the main driving component can be limited, achieving the effect of fixing the movement state of the second telescopic arm and the third telescopic arm, through the rotation of the control knob, the misaligned fixed plate can be moved, and through the contact between the eccentric state after moving through the fixed hole and the outer surface of the support head, the outer corner of the support head contacts the inner wall of the fixed hole, thereby preventing the driving screw from rotating, and further fixing the telescopic state of the second telescopic arm and the third telescopic arm. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure of the present application is shown in the figure;

[0021] Figure 2 The internal structure of the rotating frame of the present application is shown in the figure;

[0022] Figure 3 The internal structure of the structure storage arm of the present application is shown in the figure;

[0023] Figure 4 The structure of the telescopic fixing assembly of the present application is shown in the figure;

[0024] Figure 5 The internal structure of the second telescopic arm of the present application is shown in the figure;

[0025] Figure 6 The assembly drawing of the third telescopic arm of the present application is shown in the figure;

[0026] Figure 7 The structure of the rotating counterweight of the present application is shown in the figure;

[0027] Figure 8 The rotating state of the rotating counterweight of the present application is shown in the figure.

[0028] In the figure: 1, three-axis moving platform; 2, main shaft box; 3, rotating frame; 31, first driving part; 32, storage arm; 321, first telescopic arm; 322, third driving part; 323, driving screw; 324, support head; 33, rotating counterweight; 331, rotating groove; 332, rotating sliding groove; 333, counterweight body; 334, friction ring; 335, sliding rotating column; 336, linkage rod; 34, second telescopic arm; 341, relay bevel gear; 342, transmission bevel gear; 343, synchronous chain; 344, telescopic body one; 345, rotating support column; 35, third telescopic arm; 351, fixed block; 352, telescopic body two; 36, telescopic fixed assembly; 361, support plate; 362, staggered fixed plate; 363, fixed hole; 364, moving screw; 365, control knob; 4, rotating tray; 5, saddle; 51, second driving part; 6, machine base. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application are described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0030] Please refer to Figures 1 to 8 The embodiment of the present application provides a technical solution: a vertical double-main-shaft five-axis linkage machining device, which comprises a machine base 6, the top end of the machine base 6 is rotationally connected with two rotating frames 3, the two rotating frames 3 are mirror-symmetric to each other, the machine base 6 is provided with a first driving part 31 for driving the rotating frames 3 to rotate, the opposite sides of the two rotating frames 3 are jointly rotationally connected with two saddles 5, one of the rotating frames 3 is provided with a second driving part 51 for driving the saddle 5 to rotate, the top end of the saddle 5 is rotationally connected with a rotating tray 4, and the bottom end of the saddle 5 is provided with a fourth driving part for driving the rotating tray 4 to rotate, the machine base 6 is provided with a three-axis moving platform 1, the three-axis moving platform 1 is provided with a main shaft box 2, and the main shaft box 2 is installed with a tool.

[0031] After the workpiece is clamped and fixed on the rotating tray 4, the first driving part 31 can drive the two rotating frames 3 at the top to rotate, the second driving part 51 on one of the rotating frames 3 can adjust the angle of the saddle 5, so that the saddle 5 maintains a horizontal angle, the fourth driving part can drive the rotating tray 4 to rotate, and at the same time, the three-axis moving platform 1 on the machine base 6 drives the main shaft box 2 and the tool to move, thereby realizing the spatial positioning before workpiece machining and the cutting machining action.

[0032] The three-axis moving platform 1 can drive the main shaft box 2 and the tool to move on the XYZ axis to meet the machining requirements of different surfaces of the workpiece, which is not described here.

[0033] Please refer to Figure 2 , the rotating frame 3 comprises a receiving arm 32, a rotating counterweight 33 is rotationally connected to the middle of the inner side of the receiving arm 32, a second telescopic arm 34 is rotationally connected to the two sides of the rotating counterweight 33, the second telescopic arm 34 is slidingly connected to the inner side of the receiving arm 32, a third telescopic arm 35 is slidingly connected to the inner side of the second telescopic arm 34, one end of the third telescopic arm 35 away from the second telescopic arm 34 is rotationally connected to one end of the saddle 5, and the two ends of the receiving arm 32 are fixedly connected with telescopic fixing assemblies 36 which penetrate the second telescopic arm 34 and the third telescopic arm 35 along the direction of the saddle 5.

[0034] The three-section mechanical telescopic structure can achieve a longer adjustment range, balance the stress of the receiving arm 32 through the rotating counterweight 33, avoid frequent disassembly and wear of the workpiece, ensure the machining precision and continuity through the screw rod and chain transmission, adapt to the double-spindle machining demand, and drive the hydraulic telescopic structure. However, the structure is heavy and cannot be independently telescoped at both ends, the gravity center after telescoping cannot be adjusted, the maintenance cost is high, the response is slow, and the requirements cannot be met.

[0035] When the rotating frame 3 is working, the receiving arm 32 is the core support structure, the rotating counterweight 33 in the middle of the inner side can assist in balancing, the second telescopic arms 34 on the two sides can slide in the inner side of the receiving arm 32, the third telescopic arms 35 in the inner side of the second telescopic arms 34 can further slide and connect the saddle 5, and the telescopic fixing assemblies 36 at the two ends of the receiving arm 32 penetrate the second and third telescopic arms 35 to ensure the stability when the two slide and fix them when necessary, and complete the position adjustment of the saddle 5 and the workpiece.

[0036] Please refer to Figure 3 , the receiving arm 32 comprises a first telescopic arm 321, a drive screw 323 is arranged inside the first telescopic arm 321 along the sliding direction of the second telescopic arm 34, a support head 324 is fixedly connected to one end of the drive screw 323, the drive screw 323 is rotationally connected to the telescopic fixing assembly 36 through the support head 324, and the first telescopic arm 321 is provided with a third driving piece 322 for driving the rotation of the drive screw 323.

[0037] Inside the first telescopic arm 321, the third driving piece 322 can drive the rotation of the drive screw 323 arranged along the sliding direction of the second telescopic arm 34, the support head 324 at one end of the drive screw 323 is rotationally connected to the telescopic fixing assembly 36, the rotation of the drive screw 323 provides power for the telescoping of the second telescopic arm 34, and then drives the saddle 5 and the workpiece to adjust the position, so as to extend away from the machining position to keep a safe distance.

[0038] Please refer to Figure 4The cross section of the support head 324 is a rectangle with four arc sides. The arcs of the length and width of the support head 324 are different. During the rotation of the drive screw 323, the end support head 324 stably rotates in the telescopic fixing assembly 36. The special cross section can ensure that the rotation track of the drive screw 323 is circular, reduce rotation friction, and ensure that the telescopic fixing assembly 36 is in contact with the drive screw 323 to ensure functionality.

[0039] The telescopic fixing assembly 36 includes a support plate 361 fixedly connected to the inner side of one end of the first telescopic arm 321. The drive screw 323 penetrates through the shorter two side arc edges of the support head 324 and is rotationally connected to the support plate 361. The side of the support plate 361 away from the drive screw 323 is provided with a staggered fixing plate 362. The middle part of the staggered fixing plate 362 is provided with a penetrating fixing hole 363. The staggered fixing plate 362 is sleeved on the outer surface of the support head 324 through the fixing hole 363. The staggered fixing plate 362 is perpendicularly arranged with the support head 324 and is slidingly connected to the inside of the first telescopic arm 321. One end of the staggered fixing plate 362 is fixedly connected with a moving screw 364. The end of the moving screw 364 away from the staggered fixing plate 362 extends to the outside of the first telescopic arm 321. The outer surface of the moving screw 364 is threadedly connected with a control knob 365 rotationally connected to the outer surface of the first telescopic arm 321. The diameter of the fixing hole 363 is larger than the rotation diameter of the support head 324.

[0040] When it is necessary to fix the position of the second and third telescopic arms 35, the control knob 365 outside the first telescopic arm 321 is rotated, which drives the moving screw 364 and the staggered fixing plate 362 to slide in the first telescopic arm 321. The fixing hole 363 of the staggered fixing plate 362 is sleeved on the support head 324 and is in contact with the outer surface of the support head 324 after moving. The outer edges of the support head 324 limit the rotation of the drive screw 323, thereby fixing the movement state of the telescopic arm. The support plate 361 provides rotation support for the drive screw 323.

[0041] Please refer to Figure 5, the second telescopic arm 34 comprises a telescopic body one 344, the outer surface of the telescopic body one 344 is slidably connected to the inner side of the first telescopic arm 321, and the inner side of the telescopic body one 344 is slidably connected to the outer surface of the telescopic fixed assembly 36, one end of the telescopic body one 344 is threadedly connected to the outer surface of the drive screw 323, the inner side of the telescopic body one 344 is rotatably connected with a relay bevel gear 341, the relay bevel gear 341 is threadedly connected to the outer surface of the drive screw 323, the upper and lower sides of the relay bevel gear 341 are engagedly connected with a transmission bevel gear 342, the transmission bevel gear 342 is rotatably connected to the inner side of the telescopic body one 344, the inner side of the telescopic body one 344 away from the first telescopic arm 321 is rotatably connected with two rotating struts 345, the two rotating struts 345 correspond to the two transmission bevel gears 342 respectively, and the transmission bevel gear 342 and the parallel rotating struts 345 are jointly engagedly connected with a synchronous chain 343.

[0042] When the drive screw 323 rotates, the telescopic body one 344 of the second telescopic arm 34 slides due to the threaded connection with the drive screw 323, and the relay bevel gear 341 in the inner side of the telescopic body one 344 rotates synchronously under the action of threads due to the characteristic that it can rotate in the inner side of the telescopic body one 344, drives the upper and lower transmission bevel gears 342 to rotate, and the transmission bevel gears 342 drive the parallel rotating struts 345 through the synchronous chain 343, so as to transmit power for the movement of the third telescopic arm 35, and adjust the distance between the saddle 5 and the cutter.

[0043] Please refer to Figure 6 , the third telescopic arm 35 comprises a telescopic body two 352, the outer surface of the telescopic body two 352 is slidably connected to the inner side of the telescopic body one 344, the inner side of the telescopic body two 352 is fixedly connected with two fixed blocks 351, and the two fixed blocks 351 are fixedly connected to different sides of the outer surfaces of the two synchronous chains 343 respectively.

[0044] When the synchronous chain 343 rotates, the two fixed blocks 351 in the inner side of the telescopic body two 352 of the third telescopic arm 35 are driven to slide in the inner side of the telescopic body one 344, so as to further lengthen or shorten the distance between the saddle 5 and the storage arm 32, and to control the distance of extension and processing.

[0045] Please refer to Figure 7 and Figure 8, the rotating counterweight 33 comprises a fan-shaped counterweight body 333 rotationally connected to the middle part of the inner side of the first telescopic arm 321, the circular arc surface of the counterweight body 333 is provided with two rotating sliding grooves 332, the two ends of each rotating sliding groove 332 are provided with a rotating groove 331, the inner side of the rotating groove 331 is rotationally provided with a semicircular friction circle 334, the outer surface of the sliding rotating column 335 is fixedly connected with a connecting rod 336, and one end of the connecting rod 336 away from the sliding rotating column 335 is rotationally connected to one end close to the friction circle 334 and one side away from the friction circle 334.

[0046] The diameter of the rotating groove 331 is greater than the groove width of the rotating sliding groove 332, and the inner side of the friction circle 334 is provided with a friction rubber strip.

[0047] When the second telescopic arm 34 slides, the sliding rotating column 335 of the rotating counterweight 33 is driven to rotate in the rotating groove 331 of the fan-shaped counterweight body 333 through the connecting rod 336, the sliding rotating column 335 drives the semicircular friction circle 334 to rotate through friction, so that the sliding rotating column 335 cannot slide in the rotating sliding groove 332 under the wrapping restriction of the friction circle 334, the sliding rotating column 335 fixes the rotation point of the counterweight body 333, then under the continuous telescoping of the second telescopic arm 34, the counterweight body 333 can be continuously driven to rotate through the connecting rod 336, so as to adjust the gravity center of the device and offset the stress generated when the second telescopic arm 35 and the third telescopic arm 35 are extended.

[0048] Under the rotation of the counterweight body 333, the other side of the telescopic body 344 of the workpiece being machined is stationary, so as not to drive the friction circle 334 to rotate through the friction of the connecting rod 336, so that the sliding rotating column 335 can slide in the rotating sliding groove 332 when the counterweight body 333 rotates, without affecting the working state of the machining side.

[0049] Please refer to Figures 1 to 8 , in working,

[0050] Firstly, the third driving member 322 drives the driving screw 323 in the first telescopic arm 321 to rotate, drives the second telescopic arm 34 to slide, and simultaneously drives the third telescopic arm 35 to synchronously slide and extend through the relay bevel gear 341, the transmission bevel gear 342 and the synchronous chain 343, so as to extend the saddle 5 to the front of the staff or the automatic equipment, then fix the workpiece on the rotating tray 4 after clamping, then reversely rotate the driving screw 323 to drive the workpiece to retract, and finally drive the workpiece to rotate to the lower side of the spindle box 2 through the driving of the first driving member 31 and the second driving member 51, so as to start the machining of the workpiece, and the other side of the workpiece machined is extended to take down the workpiece.

[0051] Meanwhile, the contents not described in detail in the specification all belong to the prior art known by those skilled in the art.

[0052] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions from each other, without necessarily requiring or implying any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0053] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A vertical dual-spindle five-axis linkage machining device, comprising a machine base (6), characterized in that: The top of the base (6) is rotatably connected to two rotating frames (3), which are mirror images of each other. The base (6) is provided with a first driving member (31) for driving the rotating frames (3) to rotate. The two rotating frames (3) are rotatably connected to two saddles (5) on opposite sides. One of the rotating frames (3) is provided with a second driving member (51) for driving the saddle (5) to rotate. The top of the saddle (5) is rotatably connected to a rotating tray (4). The bottom of the saddle (5) is provided with a fourth driving member for driving the rotating tray (4) to rotate. The base (6) is provided with a three-axis moving platform (1). The three-axis moving platform (1) is provided with a spindle box (2). The spindle box (2) is equipped with a cutting tool. The rotating frame (3) includes a storage arm (32), a rotating counterweight (33) is rotatably connected to the middle of the inner side of the storage arm (32), and a second telescopic arm (34) is rotatably connected to both sides of the rotating counterweight (33). The second telescopic arm (34) is slidably connected to the inner side of the storage arm (32), and a third telescopic arm (35) is slidably connected to the inner side of the second telescopic arm (34). The end of the third telescopic arm (35) away from the second telescopic arm (34) is rotatably connected to one end of the saddle (5). Both ends of the storage arm (32) are fixedly connected to telescopic fixing components (36), and the telescopic fixing components (36) pass through the second telescopic arm (34) and the third telescopic arm (35) along the direction of the saddle (5). The storage arm (32) includes a first telescopic arm (321), inside which a drive screw (323) is provided along the sliding direction of the second telescopic arm (34), one end of which is fixedly connected to a support head (324), and the drive screw (323) is rotatably connected to the telescopic fixing assembly (36) through the support head (324). Inside the first telescopic arm (321) is a third drive member (322) that drives the drive screw (323) to rotate. The rotating counterweight (33) includes a fan-shaped counterweight body (333) rotatably connected to the middle of the inner side of the first telescopic arm (321). The counterweight body (333) has two rotating grooves (332) on its arc surface. Rotating grooves (331) are provided at both ends of the rotating grooves (332). A semi-circular friction ring (334) is rotatably connected inside the rotating grooves (331). A sliding column (335) is slidably connected inside the rotating grooves (332). A connecting rod (336) is fixedly connected to the outer surface of the sliding column (335). The end of the connecting rod (336) away from the sliding column (335) is rotatably connected to the end of the friction ring (334) that is close to it and away from the friction ring (334). The diameter of the rotating groove (331) is greater than the width of the rotating slide groove (332), and a friction strip is provided on the inner side of the friction ring (334).

2. The vertical dual-spindle five-axis linkage machining device according to claim 1, characterized in that: The cross-section of the support head (324) is a rectangle with four rounded sides, and the length and width of the support head (324) have different curvatures.

3. The vertical dual-spindle five-axis linkage machining device according to claim 2, characterized in that: The telescopic fixing assembly (36) includes a support plate (361), which is fixedly connected to the inner side of one end of the first telescopic arm (321). The drive screw (323) passes through the shorter two arc edges of the support head (324) and is rotatably connected to the support plate (361). A misaligned fixing plate (362) is provided on the side of the support plate (361) away from the drive screw (323). A through fixing hole (363) is provided in the middle of the misaligned fixing plate (362). The misaligned fixing plate (362) is sleeved on the support head (321) through the fixing hole (363). 4) On the outer surface, the misaligned fixing plate (362) is perpendicularly arranged to the support head (324) and slidably connected to the inside of the first telescopic arm (321). One end of the misaligned fixing plate (362) is fixedly connected to a moving screw (364). The end of the moving screw (364) away from the misaligned fixing plate (362) extends to the outside of the first telescopic arm (321). The outer surface of the moving screw (364) is threaded with a control knob (365) that is rotatably connected to the outer surface of the first telescopic arm (321). The diameter of the fixing hole (363) is larger than the rotation diameter of the support head (324).

4. The vertical dual-spindle five-axis linkage machining device according to claim 3, characterized in that: The second telescopic arm (34) includes a telescopic body (344), the outer surface of which is slidably connected to the inner side of the first telescopic arm (321) and the inner surface of which is slidably connected to the outer surface of the telescopic fixing assembly (36). One end of the telescopic body (344) is threadedly connected to the outer surface of the drive screw (323). A relay bevel tooth (341) is rotatably connected inside the telescopic body (344). The relay bevel tooth (341) is threadedly connected to the outer surface of the drive screw (323). The upper and lower sides of the tooth (341) are meshed with transmission bevel teeth (342), which are rotatably connected to the inside of the telescopic body (344). Two rotating pillars (345) are rotatably connected to the side of the telescopic body (344) away from the first telescopic arm (321). The two rotating pillars (345) are parallel to the two transmission bevel teeth (342) respectively. The transmission bevel teeth (342) and the parallel rotating pillars (345) are meshed together with a synchronous chain (343).

5. A vertical dual-spindle five-axis linkage machining device according to claim 4, characterized in that: The third telescopic arm (35) includes a second telescopic body (352), the outer surface of which is slidably connected to the inner side of the first telescopic body (344), and two fixing blocks (351) are fixedly connected to the inner side of the second telescopic body (352). The two fixing blocks (351) are respectively fixedly connected to different sides of the outer surface of the two synchronous chains (343).

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