Double-clamping synchronous cutting device for two ends of rotor shaft

Abstract

The invention discloses a double-clamping rotor shaft two-end synchronous cutting device which comprises a track table, two clamping mechanisms sliding along the track table are arranged on the track table in a sliding mode, both the two clamping mechanisms can clamp the outer circumferential face of a rotor shaft, and the two clamping mechanisms are connected through a transmission mechanism. The transmission mechanism can enable the two clamping mechanisms to relatively move on the track table so as to adjust the to-be-cut portions of the rotor shafts on the clamping mechanisms to be close to the two ends of the track table, the two clamping mechanisms which relatively slide are arranged to horizontally clamp the rotor shafts, the two ends of the rotor shafts can be exposed at the same time, and therefore the cutting efficiency of the rotor shafts is improved. The cutting device can conveniently cut the two ends of the rotor shaft at the same time; the two clamping mechanisms are controlled to slide relatively, and the positions, clamped on the rotor shaft, of the clamping mechanisms are closer to the positions, needing to be cut, of the two ends of the rotor shaft.

Description

Technical Field

[0001] The present invention relates to the technical field of rotor shaft processing, and particularly relates to a synchronous cutting device for both ends of a rotor shaft with double clamping. Background Art

[0002] During the production and shaping process of a rotor shaft, it is generally necessary to polish its surface to make it smoother and more durable. When polishing the rotor shaft, the two ends of the rotor shaft are generally clamped and a polishing roller is used to polish the middle part of the rotor shaft, so that the middle part of the rotor shaft meets the processing requirements after polishing. Then, the redundant parts used for clamping at both ends of the rotor shaft need to be cut.

[0003] In the prior art, the method of cutting both ends of the rotor shaft is usually to operate a lathe to directly cut both ends of the rotor shaft. During cutting, the operator manually adjusts one end of the rotor shaft to an appropriate position for cutting. Then, the rotor shaft needs to be removed and the direction of the rotor shaft needs to be changed to cut the other end of the rotor shaft.

[0004] When cutting both ends of the rotor shaft, it is necessary to clamp the rotor shaft, and during the clamping process, it is necessary to adjust according to the cutting position of the rotor shaft to avoid shaking due to the action of the lathe during cutting, thereby affecting the cutting accuracy of the rotor shaft.

[0005] Therefore, in the prior art, when cutting each rotor shaft, the direction needs to be adjusted once and the rotor shaft needs to be fixed twice. On the one hand, it affects the cutting efficiency, and on the other hand, it is easy to cause product defects due to clamping factors. Summary of the Invention

[0006] The purpose of the present invention is to provide a synchronous cutting device for both ends of a rotor shaft with double clamping to solve the problems in the prior art that the operation of cutting both ends of the rotor shaft is relatively cumbersome and it is difficult to quickly adjust the clamping position after clamping the rotor shaft.

[0007] To solve the above technical problems, the present invention specifically provides the following technical solutions: A synchronous cutting device for both ends of a rotor shaft with double clamping, including a track table, on which two clamping mechanisms sliding along the track table are provided; The two clamping mechanisms are connected by a transmission mechanism. On both sides of the track table, an axial push rod is provided respectively. The two axial push rods can synchronously push both ends of the rotor shaft so that both ends of the rotor shaft extend out of the clamping mechanisms. On the side of the track table, a clamping control mechanism for synchronously controlling the clamping states of the two clamping mechanisms is provided; An axial cutting device is provided directly above the track table; Wherein: The clamping mechanism includes a transmission slide slidably connected to the track platform, the transmission slide is provided with a lower clamping seat for supporting the rotor shaft, the lower clamping seat is provided with an upper clamping seat for pressing the rotor shaft together with the lower clamping seat, and the lower clamping seat and the upper clamping seat are connected by an elastic connecting member; The clamping control mechanism includes a cylinder and a slide rail arranged on one side of the track platform, a slide rail is longitudinally slidably connected to the slide rail, and two horizontally distributed clamping seat cross bars are provided on the side of the slide close to the clamping mechanism, and the two clamping seat cross bars are respectively located at the upper and lower ends of the two clamping mechanisms.

[0008] Furthermore, the elastic connector elastically supports the upper clamping seat so that the upper clamping seat is automatically pressed toward the lower clamping seat.

[0009] Furthermore, threaded holes are formed on both transmission slides, and the threaded holes of the two transmission slides are opposite to each other, and the threaded holes on the two transmission slides are parallel to the direction in which the transmission slides slide on the track platform; The rotor shaft elastically pressed together by the two lower clamping seats and the two upper clamping seats always maintains a horizontal state parallel to the sliding direction of the transmission slide on the track platform.

[0010] Furthermore, the opposing surfaces of the lower clamping seat and the upper clamping seat are both provided with V-shaped grooves, and the V-shaped grooves of the lower clamping seat and the upper clamping seat are joined to form a prismatic groove that is engaged around the outer side of the rotor shaft. The lower clamping seat and the upper clamping seat are engaged together to form four pressing areas on the outer side of the rotor shaft; A wedge groove is provided in the middle portion of the lower clamping seat for the corresponding portion of the lower clamping seat to be embedded in when the upper clamping seat is over-pressed; Wherein, a protruding structure cooperating with the clamping control mechanism is provided on a side of the upper clamping seat away from the elastic connecting piece.

[0011] Furthermore, the elastic connecting member includes a first connecting arm fixed on the lower clamping seat, and a second connecting arm fixed on the upper clamping seat. The first connecting arm and the second connecting arm are rotatably connected by a connecting shaft, and a torsion spring is sleeved on the connecting shaft for elastically supporting the second connecting arm so that the second connecting arm automatically rotates toward the first connecting arm.

[0012] Furthermore, the transmission mechanism includes bearing frames respectively arranged on both sides of the track platform, and a double-threaded rod is rotatably connected between the two bearing frames and is respectively connected to the two transmission slides by threads. The middle part of the double-threaded rod is provided with a mid-section transmission mechanism that drives the double-threaded rod to rotate between the two bearing frames.

[0013] Further, two opposite threads are symmetrically arranged on the outer side of the double threaded rod with respect to the middle part of the double threaded rod. The double threaded rod is connected to the threaded holes of the two transmission sliders through the two opposite threads. The rotation of the double threaded rod between the two bearing brackets can make the two transmission sliders slide relative to each other on the track table.

[0014] Further, the middle section transmission mechanism includes a transmission pulley fixedly sleeved on the middle part of the double threaded rod, and a stepping motor arranged inside the track table. The output end of the stepping motor and the outer side of the transmission pulley are jointly sleeved with a transmission belt. The output end of the stepping motor can control the transmission pulley and the double threaded rod to rotate synchronously through the transmission belt.

[0015] Further, when the sliding plate slides upward along the slide rail, the protruding structures of the two upper clamping seats are lifted by the clamping seat cross bar at the bottom end, so that the upper clamping seats no longer clamp the rotor shaft on the lower clamping seat; When the sliding plate slides downward along the slide rail, the protruding structures of the two upper clamping seats are pressed by the clamping seat cross bar at the top end, so that the upper clamping seats fixedly press the rotor shaft on the lower clamping seat.

[0016] The present invention has the following beneficial effects compared with the prior art: The present invention uses a clamping mechanism that can slide relative to each other to clamp the rotor shaft. During specific cutting, both ends of the rotor shaft can be exposed for synchronous cutting, and as close as possible to the cutting position, thereby improving the clamping stability and reducing the vibration impact of the lathe cutting on the rotor shaft. At the same time, the rotor shaft is clamped in two forms. During elastic clamping, the relative movement of the two clamping mechanisms on the rotor shaft can keep the rotor shaft in a horizontal state. When the clamping mechanism moves to an appropriate position, it can cooperate with the clamping control mechanism to firmly clamp the rotor shaft. The two forms of clamping improve the flexibility while ensuring the clamping stability. Description of the Drawings

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained based on the provided drawings.

[0018] Figure 1 It is a schematic diagram of the overall device provided by the present invention.

[0019] Figure 2 It is a side cross-sectional view of a part of the device provided by the present invention.

[0020] Figure 3 This is a rear view of the clamping control mechanism provided for the present invention.

[0021] Figure 4 This is a schematic structural view of the lower clamping seat provided for the present invention.

[0022] The reference numerals in the figure respectively represent the following: 1 - Track table; 2 - Clamping mechanism; 3 - Transmission mechanism; 4 - Axial push rod; 5 - Clamping control mechanism; 6 - Axial cutting device; 21 - Transmission slide; 22 - Lower clamping seat; 23 - Upper clamping seat; 24 - Elastic connecting member; 241 - First connecting arm; 242 - Second connecting arm; 243 - Connecting shaft; 244 - Torsion spring; 31 - Bearing bracket; 32 - Double threaded rod; 33 - Middle section transmission mechanism; 331 - Transmission sleeve wheel; 332 - Stepper motor; 333 - Transmission belt; 51 - Cylinder; 52 - Slide rail; 53 - Slide plate; 54 - Clamping seat cross bar. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] As Figures 1 to 4 shown, the present invention provides a double - clamping synchronous cutting device for both ends of a rotor shaft, including a track table 1. Two clamping mechanisms 2 that slide along the track table 1 are slidably arranged on the track table 1. Both clamping mechanisms 2 can clamp the outer circumferential surface of the rotor shaft. A transmission mechanism 3 is provided between the two clamping mechanisms 2. The transmission mechanism 3 can make the two clamping mechanisms 2 move relative to each other on the track table 1 to adjust the part of the rotor shaft to be cut on the clamping mechanism 2 to be close to both ends of the track table 1; Axial push rods 4 for pushing the ends of the rotor shaft on the clamping mechanisms 2 are respectively arranged on both sides of the track table 1. The two axial push rods 4 can synchronously push both ends of the rotor shaft so that the lengths of the two ends of the rotor shaft extending out of the two clamping mechanisms 2 are equal. A clamping control mechanism 5 for synchronously controlling the clamping states of the two clamping mechanisms 2 is arranged on the side surface of the track table 1. The two clamping mechanisms 2 can clamp the rotor shaft through the clamping control mechanism 5 at any position on the track table 1; Above the rail table 1, a shaft cutting device 6 is provided. The shaft cutting device 6 is used to cut the redundant parts at the ends of the rotor shaft clamped by the two clamping mechanisms 2 by lowering its height.

[0025] The existing method for cutting both ends of the rotor shaft is to operate a lathe to cut both ends of the rotor shaft. However, when using a lathe for cutting, it is necessary to manually adjust one end of the rotor shaft to an appropriate position for cutting. After that, it is necessary to remove the rotor shaft and then change the direction of the rotor shaft to cut the other end of the rotor shaft. The operation is relatively cumbersome.

[0026] In the present invention, by providing two relatively sliding clamping mechanisms for horizontally clamping the rotor shaft, both ends of the rotor shaft can be simultaneously exposed, facilitating the cutting device to cut both ends of the rotor shaft at the same time.

[0027] After the clamping device clamps the rotor shaft, if the position where the rotor shaft is clamped is far from the part to be cut, vibration may occur at the end of the rotor shaft during cutting of the end of the rotor shaft, which will affect the cutting effect of the rotor shaft. Therefore, it is necessary to loosen the clamping device again and adjust the position of clamping the rotor shaft, and the operation is relatively cumbersome.

[0028] In the present invention, by controlling the relative sliding of the two clamping mechanisms, as the position where the clamping mechanism clamps on the rotor shaft gets closer to the positions to be cut at both ends of the rotor shaft, the clamping stability can be greatly improved when cutting the redundant parts at both ends of the rotor shaft subsequently, effectively reducing the vibration caused by the fact that the clamping part of the rotor shaft is far from the cutting part.

[0029] Among them, the clamping mechanism 2 includes a driving slide 21 slidably connected to the rail table 1. A lower clamp seat 22 for supporting the rotor shaft is provided on the driving slide 21. An upper clamp seat 23 for jointly pressing the rotor shaft with the lower clamp seat 22 is provided on the lower clamp seat 22. An elastic connecting member 24 is provided between the lower clamp seat 22 and the upper clamp seat 23. The elastic connecting member 24 elastically supports the upper clamp seat 23 to make the upper clamp seat 23 automatically press towards the lower clamp seat 22.

[0030] Threaded holes are provided on both driving slides 21, and the threaded holes of the two driving slides 21 are opposite. The orientation of the threaded holes on the two driving slides 21 is parallel to the sliding direction of the driving slides 21 on the rail table 1; Among them, the rotor shaft jointly and elastically pressed by the two lower clamp seats 22 and the two upper clamp seats 23 always maintains a horizontal state parallel to the sliding direction of the driving slides 21 on the rail table 1.

[0031] The opposite surfaces of the lower clamping seat 22 and the upper clamping seat 23 are both provided with V-shaped grooves. The V-shaped grooves of the lower clamping seat 22 and the upper clamping seat 23 are joined together to form a rhombic groove that engages around the outside of the rotor shaft. The combined clamping of the lower clamping seat 22 and the upper clamping seat 23 can form four pressing areas on the outside of the rotor shaft. Among them, the width of the upper clamping seat 23 is less than the width of the lower clamping seat 22. The upper clamping seat 23 is located at the central position of the lower clamping seat 22. A wedge groove is provided in the middle part of the lower clamping seat 22 for the corresponding part of the lower clamping seat 22 to be embedded when the upper clamping seat 23 is over-pressed. Among them, rubber pads are provided in the V-shaped grooves on the opposite surfaces of the lower clamping seat 22 and the upper clamping seat 23. Among them, a convex structure cooperating with the clamping control mechanism 5 is provided on the side of the upper clamping seat 23 away from the elastic connecting member 24.

[0032] The elastic connecting member 24 includes a first connecting arm 241 fixed to the lower clamping seat 22 and a second connecting arm 242 fixed to the upper clamping seat 23. The first connecting arm 241 and the second connecting arm 242 are rotatably connected through a connecting shaft 243. A torsion spring 244 for elastically supporting the second connecting arm 242 to automatically rotate towards the first connecting arm 241 is sleeved on the connecting shaft 243.

[0033] The transmission mechanism 3 includes bearing brackets 31 respectively arranged on both sides of the track table 1. A double-threaded rod 32 rotatably connected between the two bearing brackets 31 is threadedly connected to the two transmission sliders 21 respectively. A middle-section transmission mechanism 33 for driving the double-threaded rod 32 to rotate between the two bearing brackets 31 is provided at the middle part of the double-threaded rod 32.

[0034] Two opposite threads are symmetrically arranged on the outside of the double-threaded rod 32 with respect to the middle part of the double-threaded rod 32. The double-threaded rod 32 is connected to the threaded holes of the two transmission sliders 21 through the two opposite threads. The rotation of the double-threaded rod 32 between the two bearing brackets 31 can make the two transmission sliders 21 slide relative to each other on the track table 1.

[0035] The middle-section transmission mechanism 33 includes a transmission pulley 331 fixedly sleeved on the middle part of the double-threaded rod 32 and a stepping motor 332 arranged inside the track table 1. The output end of the stepping motor 332 and the outside of the transmission pulley 331 are jointly sleeved with a transmission belt 333. The output end of the stepping motor 332 can control the transmission pulley 331 and the double-threaded rod 32 to rotate synchronously through the transmission belt 333.

[0036] The clamping control mechanism 5 includes a cylinder 51 and a slide rail 52 arranged on one side of the track table 1. A slide plate 53 is longitudinally slidably connected to the slide rail 52. The cylinder 51 can control the slide plate 53 to slide up and down along the slide rail 52. Wherein, on one side of the skateboard 53 close to the clamping mechanism 2, there are two horizontally distributed clamp seat crossbars 54, and the two clamp seat crossbars 54 are respectively located at the upper and lower ends of the two clamping mechanisms 2.

[0037] When the skateboard 53 slides upward along the slide rail 52, the protruding structures of the two upper clamp seats 23 can be lifted by the clamp seat crossbar 54 at the bottom end, so that the upper clamp seats 23 no longer clamp the rotor shaft on the lower clamp seats 22. Wherein, when the skateboard 53 slides downward along the slide rail 52, the protruding structures of the two upper clamp seats 23 can be pressed by the clamp seat crossbar 54 at the top end, so that the upper clamp seats 23 fixedly press the rotor shaft on the lower clamp seats 22. Wherein, the middle position of the clamp seat crossbar 54 and the central position of the double threaded rod 32 are in the same plane, and when the two transmission sliders 21 are in the maximum spacing state, the protruding structures of the two upper clamp seats 23 can still contact the two clamp seat crossbars 54.

[0038] When cutting the two ends of the polished rotor shaft, the following steps are required: Step 100: Place the rotor shaft in the clamping mechanism 2: Control the output end of the cylinder 51 of the clamping control mechanism 5 to extend, so that the skateboard 53 slides upward along the slide rail 52 until the height of the clamp seat crossbar 54 at the bottom end among the two clamp seat crossbars 54 on the skateboard 53 rises until the clamp seat crossbar 54 contacts the protruding structures of the upper clamp seats 23 of the two clamping mechanisms 2, and along with the continuous rise, it rotates along the connecting shaft 243 of the elastic connecting piece 24 together with the upper clamp seats 23, so that the gap between the upper clamp seats 23 and the lower clamp seats 22 becomes larger, and then the rotor shaft is passed through the two clamping mechanisms and placed in the V-shaped grooves on the two lower clamp seats 22.

[0039] Step 200: The two clamping mechanisms 2 elastically clamp the rotor shaft: Then control the output end of the cylinder 51 to retract and control the height of the skateboard 53 to decrease, so that the clamp seat crossbar 54 at the lower end no longer contacts the protruding structure of the upper clamp seat 23. At this time, the torsion spring 244 of the elastic connecting piece 24 is released, and the upper clamp seat 23 is controlled to rotate towards the position of the lower clamp seat 22 through the second connecting arm 242, so that the V-shaped groove of the upper clamp seat 23 elastically presses on the outer side of the rotor shaft.

[0040] Step 300: Correct the position of the rotor shaft in the two clamping mechanisms 2: Control the output ends of the two shaft push rods 4 to extend synchronously, so that the two output ends of the two shaft push rods 4 move towards the two ends of the rotor shaft in the two clamping mechanisms 2. Since the clamping mechanism 2 elastically clamps the rotor shaft at this time, the rotor shaft will be in a symmetrical state in the two clamping mechanisms 2 under the action of the two shaft push rods 4.

[0041] Step 400: Adjust the distance between the two clamping mechanisms 2: Control the rotation of the output end of the stepper motor 332 of the middle-section transmission mechanism 33, so that the output end of the stepper motor 332 drives the transmission sleeve wheel 331 to rotate through the transmission belt 333, and the transmission sleeve wheel 331 rotates synchronously with the double-threaded rod 32 in the two bearing brackets 31; As the double-threaded rod 32 rotates, the two transmission sliders 21 threadedly connected to the double-threaded rod 32 will slide on the track table in opposite directions, so that the distance between the two transmission sliders 21 continuously increases. The lower clamping seats 22 and the upper clamping seats 23 on the two transmission sliders 21 will continuously move towards both ends of the rotor shaft in a state of elastically clamping the rotor shaft until the two clamping mechanisms move to the cutting positions near both ends of the rotor shaft. Then, stop the operation of the stepper motor 332, so that the positions of the two clamping mechanisms clamping the rotor shaft are close to the positions to be cut at both ends of the rotor shaft; By controlling the reverse rotation of the stepper motor 332, the distance between the two clamping mechanisms 2 can be controlled to continuously approach.

[0042] Step 500: The clamping control mechanism 5 controls the two clamping mechanisms to fixedly press the rotor shaft: Control the output end of the cylinder 51 to retract, so that the slide plate 53 continuously descends on the slide rail 52 until the clamping seat crossbar 54 at the top of the slide plate 53 descends to contact the protruding structures of the two upper clamping seats 23. The retracting force of the cylinder 51 determines the force of the clamping seat crossbar pressing down on the upper clamping seat 23 and the force of the upper clamping seat 23 pressing the rotor shaft into the lower clamping seat 22, so that the rotor shaft is not prone to vibration during cutting.

[0043] In the present invention, by providing a clamping mechanism capable of clamping the rotor shaft in two forms, when the clamping mechanism elastically clamps the rotor shaft, the two clamping mechanisms can keep the rotor shaft in a horizontal state when moving relative to the rotor shaft. When the positions of the two clamping mechanisms move to appropriate positions, the two clamping mechanisms can cooperate with the clamping control mechanism to firmly clamp the rotor shaft.

[0044] The above embodiments are only exemplary embodiments of the present application and are not used to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the essence and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims

1. A synchronous cutting device for both ends of a rotor shaft with double clamping, characterized in that, It includes an orbital table (1), on which two clamping mechanisms (2) sliding along the orbital table (1) are slidably arranged. A clamping control mechanism (5) for synchronously controlling the clamping states of the two clamping mechanisms (2) is arranged on the side of the orbital table (1). An axial cutting device (6) is arranged directly above the orbital table (1). The clamping mechanism (2) includes a transmission slide (21) slidably connected to the orbital table (1). A lower clamp seat (22) for supporting the rotor shaft is arranged on the transmission slide (21). An upper clamp seat (23) that jointly presses the rotor shaft with the lower clamp seat (22) is arranged on the lower clamp seat (22). An elastic connecting piece (24) is arranged between the lower clamp seat (22) and the upper clamp seat (23) to connect them. The elastic connecting piece (24) elastically supports the upper clamp seat (23) so that the upper clamp seat (23) automatically presses towards the lower clamp seat (22). V-shaped grooves are arranged on the opposite surfaces of the lower clamp seat (22) and the upper clamp seat (23). The V-shaped grooves of the lower clamp seat (22) and the upper clamp seat (23) are joined together to form a rhombic groove that circumferentially engages the outside of the rotor shaft. The joint clamping of the lower clamp seat (22) and the upper clamp seat (23) can form four pressing areas on the outside of the rotor shaft. A wedge groove for the corresponding part of the lower clamp seat (22) to be embedded when the upper clamp seat (23) over-presses is opened in the middle part of the lower clamp seat (22). A convex structure cooperating with the clamping control mechanism (5) is arranged on the side of the upper clamp seat (23) away from the elastic connecting piece (24). The clamping control mechanism (5) includes a cylinder (51) and a slide rail (52) arranged on one side of the orbital table (1). A slide plate (53) is longitudinally slidably connected to the slide rail (52). Two horizontally distributed clamp seat crossbars (54) are arranged on the side of the slide plate (53) close to the clamping mechanism (2). When the slide plate (53) slides downward along the slide rail (52), the convex structures of the two upper clamp seats (23) are pressed by the top clamp seat crossbar (54) so that the upper clamp seat (23) fixedly presses the rotor shaft on the lower clamp seat (22).

2. The synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 1, wherein An axial push rod (4) is arranged on each side of the orbital table (1). The two axial push rods (4) can synchronously push both ends of the rotor shaft so that both ends of the rotor shaft extend out of the clamping mechanism (2).

3. The synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 2, wherein Threaded holes are opened on both of the two transmission slides (21), and the threaded holes of the two transmission slides (21) are opposite. The orientation of the threaded holes on the two transmission slides (21) is parallel to the sliding direction of the transmission slides (21) on the orbital table (1). Among them, the rotor shaft jointly and elastically pressed by the two lower clamp seats (22) and the two upper clamp seats (23) always maintains a horizontal state parallel to the sliding direction of the transmission slides (21) on the orbital table (1).

4. A synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 3, characterized in that, When the skateboard (53) slides upward along the slide rail (52), the protruding structures of the two upper clamp seats (23) are lifted by the clamp seat cross bar (54) at the bottom end, so that the upper clamp seats (23) no longer clamp the rotor shaft on the lower clamp seat (22).

5. A synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 3, characterized in that, The elastic connecting member (24) includes a first connecting arm (241) fixed on the lower clamp seat (22) and a second connecting arm (242) fixed on the upper clamp seat (23). The first connecting arm (241) and the second connecting arm (242) are rotatably connected by a connecting shaft (243), and a torsion spring (244) for elastically supporting the second connecting arm (242) so that the second connecting arm (242) automatically rotates towards the first connecting arm (241) is sleeved on the connecting shaft (243).

6. A synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 1, characterized in that, The two clamping mechanisms (2) are connected by a transmission mechanism (3). The transmission mechanism (3) includes bearing brackets (31) respectively arranged on both sides of the track table (1). A double threaded rod (32) rotatably connected between the two bearing brackets (31) and threadedly connected to the two transmission sliders (21) respectively is provided. A middle section transmission mechanism (33) for driving the double threaded rod (32) to rotate between the two bearing brackets (31) is arranged at the middle part of the double threaded rod (32).

7. A synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 6, characterized in that, Two opposite threads are symmetrically arranged on the outer side of the double threaded rod (32) with respect to the middle part of the double threaded rod (32). The double threaded rod (32) is connected to the threaded holes of the two transmission sliders (21) through the two opposite threads. The rotation of the double threaded rod (32) between the two bearing brackets (31) can make the two transmission sliders (21) slide relative to each other on the track table (1).

8. A synchronous cutting device for both ends of a rotor shaft with double clamping according to claim 7, characterized in that, The middle section transmission mechanism (33) includes a transmission sleeve wheel (331) fixedly sleeved on the middle part of the double threaded rod (32), and a stepping motor (332) arranged inside the track table (1). A transmission belt (333) is jointly sleeved on the output end of the stepping motor (332) and the outer side of the transmission sleeve wheel (331). The output end of the stepping motor (332) can control the transmission sleeve wheel (331) and the double threaded rod (32) to rotate synchronously through the transmission belt (333).

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