Double-point closed type precision press based on servo control

Abstract

The application relates to the technical field of punch equipment design, and discloses a double-point closed precision press based on servo control, which comprises a supporting base, a first servo assembly and a second servo assembly. A punch chamber is arranged above the supporting base. A servo setting chamber is arranged above the punch chamber. The first servo assembly is arranged at the right end of the inner cavity of the servo setting chamber. The first servo assembly is mirror-imaged with the second servo assembly. A punch lower die base is arranged in the punch chamber. Two groups of servo assemblies are mirror-imaged on the top of the press device to realize the lifting control of the punch assembly, the lifting speed of the punch assembly is adjusted, and the punching precision of the punch assembly is effectively improved. The scheme is provided with a plurality of reasonably-distributed damping frames, elastic support frames and connecting damping frames which can absorb the vibration generated during the punching operation, reduce the vibration influence of the mechanical vibration on the whole press device, and prolong the service life of the press.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of stamping equipment, in particular to a double-point closed precision press based on servo control. BACKGROUND

[0002] The press is a kind of general-purpose stamping equipment with exquisite structure, wide application and high production efficiency. The press can be widely applied to cutting, punching, blanking, bending, riveting and forming processes. The closed double-point press generally drives the upper and lower movement of the extruder by the extension and retraction of the output shaft of the electric push rod to process parts by plastic deformation and fracture of metal. The existing closed double-point high-speed precision press will generate a large vibration during processing, and then a recoil vibration force is formed between the body of the press and the ground. This kind of vibration force will be transmitted upward along the base of the body, and then the press will be deviated due to the influence of the vibration, affecting the precision processing of the press. The existing closed double-point high-speed precision press will have waste flying out during processing, and there is a lack of simple and effective shielding device around the body of the press, so that the waste will fly and harm the passing workers. In addition, the extension control precision of the stamping assembly is not high during the stamping process of the press, and the stamping may not be in place or over-stamping may occur, which has a negative impact on the stamped products and the stamping assembly. Therefore, a double-point closed precision press based on servo control is proposed. SUMMARY

[0003] (I) Technical problem to be solved

[0004] To solve at least one aspect of the above problems, the present application first provides a double-point closed precision press based on servo control, which is provided with a perfect worker protection device, and the lifting control of the stamping assembly is realized by using two sets of servo signals to improve the practicability of the stamping device.

[0005] (II) Technical scheme

[0006] To solve the technical problem, the present application provides a double-point closed precision press based on servo control, which comprises a supporting base, a first servo assembly and a second servo assembly. The supporting base is provided with a stamping chamber above. The stamping chamber is provided with a servo setting chamber above. The first servo assembly is arranged at the right end of the inner cavity of the servo setting chamber. The first servo assembly and the second servo assembly are mirror image arranged. A stamping lower die seat is arranged in the stamping chamber. A stamping assembly is arranged directly above the stamping lower die seat. A first vertical adjusting frame is arranged on the inner wall of the right side panel of the stamping chamber. The output device of the first servo assembly is movably connected with the first vertical adjusting frame. A group of auxiliary supporting frames are arranged at the four corners of the stamping chamber. Positioning columns are arranged at the bottoms of the auxiliary supporting frames. Elastic supporting frames are arranged in the positioning columns.

[0007] Further, the first servo assembly comprises a first servo transmission frame, a first servo motor is arranged at the bottom left end of the first servo transmission frame, a first servo cylinder is arranged at the bottom right end of the first servo transmission frame, a first extension shaft is arranged at the bottom output end of the first servo cylinder, a first connecting bayonet is arranged at the bottom of the first extension shaft, a first anti-dropping frame is arranged at the bottom of the first connecting bayonet, and a first abutting seat is arranged at the bottom of the first anti-dropping frame.

[0008] Further, the first servo cylinder is fixedly arranged on the bottom panel of the stamping bin through the first installation limiting frame arranged at the bottom of the first servo cylinder, a first fixed seat is arranged at the top outer end of the first servo cylinder, and a plurality of first reinforcing struts are uniformly arranged between the first fixed seat and the first installation limiting frame.

[0009] Further, a group of bridge type connecting frames are arranged at the top left and right ends of the stamping assembly respectively, and the central part of the right end bridge type connecting frame is fixedly connected with the first abutting seat below the first servo assembly.

[0010] Further, the first vertical adjusting frame is provided with a first side-mounted support at the bottom, the first side-mounted support is fixedly connected with the bottom of the stamping bin, the first side-mounted support is provided with a first setting seat at the top, the first setting seat is provided with a first vertical sliding groove body thereon, the right end of the first vertical sliding groove body is provided with a sliding limiting groove, and the first vertical sliding groove body is slidably connected with a first moving frame.

[0011] Further, the first moving frame is provided with a first connecting seat at the bottom left end, the first connecting seat is provided with a first limiting seat at the top left side, the first limiting seat is provided with a first fixing pin thereon, and the first fixing pin is provided with a first connecting sleeve thereon.

[0012] Further, the first limiting shell is arranged at the position corresponding to the first vertical sliding groove body in the inner wall of the right side panel of the stamping bin, the first balance cylinder is arranged at the bottom center of the first setting seat, and a group of first damping frames are arranged on the front and rear sides of the first balance cylinder respectively.

[0013] Further, the stamping installation base is arranged at the position corresponding to the stamping lower die seat at the top of the inner cavity of the supporting base, a group of extension connecting frames are arranged at the edges of the stamping installation base respectively, a group of connecting damping frames are arranged at the bottom corners of the stamping installation base respectively, a group of connecting rods are arranged at the bottom of each connecting damping frame, a turning shaft pin is arranged at the bottom of each connecting rod, and a group of side-mounted positioning seats are arranged on the side of the side wall of the supporting base close to the turning shaft pin.

[0014] (Three) beneficial effects

[0015] 1. The double-point closed precision press based on servo control provided by the application is characterized in that two groups of servo assemblies are arranged on the top of the press device in a mirror image to realize the lifting control of the stamping assembly, and the lifting speed of the stamping assembly is adjusted by two groups of vertical adjusting frames, thereby effectively improving the stamping precision of the stamping assembly, avoiding the situation of incomplete stamping or over-stamping, and reducing the appearance rate of stamping waste products.

[0016] 2. The two groups of vertical adjusting frames are fixed to the corresponding extension shafts of the servo cylinders, the relative output of the servo cylinders and the balance cylinders can limit the running direction of the extension shaft, and the stamping speed of the extension shaft can be adjusted to ensure the production effect of the workpiece. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0018] Figure 2 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0019] Figure 3 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0020] Figure 4 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0021] Figure 5 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0022] Figure 6 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0023] Figure 7 FIG. 1 is a structural schematic diagram of the precision press of the embodiment of the application;

[0024] BRIEF DESCRIPTION OF DRAWINGS

[0025] 1 is a support base, 2 is a first servo assembly, 21 is a first servo drive frame, 22 is a first servo motor, 23 is a first fixed seat, 24 is a first servo cylinder, 25 is a first reinforcing strut, 26 is a first mounting limit frame, 27 is a first extension shaft, 28 is a first connecting pin, 29 is a first anti-drop frame, 210 is a first abutting seat, 3 is a second servo assembly, 4 is a stamping assembly, 5 is a first vertical adjustment frame, 51 is a first side support, 52 is a first setting seat, 53 is a first damping frame, 54 is a first balance cylinder, 55 is a first vertical sliding groove body, 56 is a first moving frame, 57 is a first connecting seat, 58 is a first limit seat, 59 is a first fixed pin, 510 is a first connecting sleeve, 511 is a sliding limit groove, 6 is a stamping lower die seat, 61 is a stamping mounting base, 62 is an extension connecting frame, 63 is a connecting damping frame, 64 is a connecting rod, 65 is a steering shaft pin, 66 is a side positioning seat, 7 is an auxiliary support frame, 8 is a bridge connecting frame. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0027] Reference Figures 1 to 7 The embodiment of the present application provides a double-point closed type precision press based on servo control, which comprises a support base 1, a first servo assembly 2 and a second servo assembly 3. The support base 1 is provided with a stamping bin on the upper side, and the stamping bin is provided with a servo setting bin on the upper side. The first servo assembly 2 is arranged at the right end of the inner cavity of the servo setting bin. The first servo assembly 2 and the second servo assembly 3 are mirror image arranged. A stamping lower die seat 6 is arranged in the stamping bin. The stamping bin is provided with a first vertical adjustment frame 5 on the inner wall of the right side panel. The first vertical adjustment frame 5 is movably connected with the output device of the first servo assembly 2. A group of auxiliary support frames 7 are arranged at the four corners of the stamping bin. The auxiliary support frames 7 are all provided with positioning columns at the bottom. The positioning columns are all provided with elastic support frames inside. The device combines the support base 1, the stamping bin and the servo setting bin as a whole, effectively enhances the overall structural strength of the press, facilitates the reduction of the occupied space of the whole press, realizes the integrated setting of the stamping device, is provided with cabinet doors at the front ends of the support base 1 and the servo setting bin, facilitates the maintenance of the internal components of the support base 1 and the servo setting bin, is provided with a notch at the front end of the stamping bin, facilitates the workers to realize the feeding and taking of workpieces, the first servo assembly 2 and the second servo assembly 3 in the servo setting bin are mirror image arranged, the two groups of servo assemblies all penetrate the servo setting bin to establish the connection with the stamping assembly 4, thereby the stamping assembly 4 and the stamping lower die seat 6 are connected through the servo signal control to realize the stamping treatment of the workpiece.

[0028] The setting assembly, working principle and process of the second servo assembly 3 are the same as those of the first servo assembly 2, and are not described herein.

[0029] The bottom of the auxiliary support frame 7 is embedded in the extension connecting frame 62 arranged in the inner cavity of the support base 1 through the positioning column, cooperates with the elastic support frame to reduce the vibration impact on the stamping bin, realizes stable support on the inner cavity structure of the auxiliary support frame 7, and reduces the negative impact of the reciprocating operation of the servo assembly and the stamping assembly 4 on the stamping bin.

[0030] The protective baffle is arranged between the two groups of positioning columns at the front end of the stamping bin and is slightly higher than the stamping lower die seat 6, so that the debris generated during stamping can be effectively prevented from flowing from the gap at the front end of the stamping bin to the workers, and the safety of the operation is protected.

[0031] The inner wall of the left side panel of the stamping bin is provided with a second vertical adjusting frame which is mirror-imaged with the first vertical adjusting frame 5, the second vertical adjusting frame is movably connected with the output device of the second servo assembly 3, and the first vertical adjusting frame 5 is synchronous with the second vertical adjusting frame to realize synchronous output limiting adjustment of the two groups of servo assemblies, so that the retracting accuracy of the two groups of extension shafts is adjusted, and the accuracy control of the downward pressing of the stamping assembly 4 is enhanced.

[0032] The fixed mounting assembly, working process and working control parameters of the second vertical adjusting frame are synchronously arranged with the first vertical adjusting frame 5, so that the first servo assembly 2 and the second servo assembly 3 can realize synchronous output of the stamping assembly 4, and the connection relationship and working process are not described herein.

[0033] Referring to Figure 2 , the first servo assembly 2 comprises a first servo transmission frame 21, the bottom left end of the first servo transmission frame 21 is provided with a first servo motor 22, the bottom right end of the first servo transmission frame 21 is provided with a first servo cylinder 24, the bottom output end of the first servo cylinder 24 is provided with a first extension shaft 27, the bottom of the first extension shaft 27 is provided with a first connecting pin 28, the bottom of the first connecting pin 28 is provided with a first anti-disengagement frame 29, the bottom of the first anti-disengagement frame 29 is provided with a first abutting seat 210, the first servo motor 22 is connected with the first servo cylinder 24 through the first servo transmission frame 21, so that the first servo cylinder 24 can accurately control the extension and retraction displacement of the first extension shaft 27 according to the servo signal, the accuracy of the downward displacement and speed control of the stamping assembly 4 is ensured, the first extension shaft 27 is connected with the first connecting sleeve 510 by embedding the first connecting pin 28 into the first connecting sleeve 510, and the first anti-disengagement frame 29 is fixedly arranged in the first connecting seat 57, so as to realize the connection and extension and retraction adjustment control of the first extension shaft 27 by the first connecting sleeve 510, the first extension shaft 27 is connected with the first abutting seat 210 through the first connecting pin 28 and the first anti-disengagement frame 29, and the first servo cylinder 24 is fixedly connected with the right end bridge type connecting frame 8 through the first abutting seat 210.

[0034] A first mounting limit frame 26 is provided at the bottom of the first servo cylinder 24, and the bottom of the first servo cylinder 24 is fixedly set on the bottom panel of the stamping warehouse through the first mounting limit frame 26. A first fixing seat 23 is provided at the outer end of the top of the first servo cylinder 24, and a number of first reinforcing struts 25 are evenly arranged between the first fixing seat 23 and the first mounting limit frame 26. The first servo cylinder 24 is stably installed at the bottom of the right end panel of the first servo transmission frame 21 through the first fixing seat 23. The arrangement of the first reinforcing struts 25 effectively enhances the structural strength of the first servo cylinder 24. The top panel of the servo setting warehouse establishes a connection with the first servo transmission frame 21 through the mounting plate, and cooperates with the bottom panel of the stamping warehouse to establish a fixed installation of the first mounting limit frame 26, so as to realize the fixed control of the servo setting warehouse on the first servo assembly 2 and ensure the working stability of the first servo assembly 2.

[0035] See Figure 1 and Figure 7 A group of bridge connecting frames 8 are respectively provided at the left and right ends of the top of the stamping component 4. The center of the right end bridge connecting frame 8 is fixedly connected to the first abutment seat 210 under the first servo component 2. The first extending shaft 27 is fixed to the connection with the right end bridge connecting frame 8 through the first abutment seat 210 below. The second extending shaft at the lower end of the second servo component 3 is fixed to the connection with the left end bridge connecting frame 8 through the second abutment seat below. The two groups of bridge connecting frames 8 can transmit the stamping force of the two groups of servo cylinders more evenly to the top panel of the stamping component 4, ensuring the balanced output of the downward pressure on the contact end of the stamping component 4. The two groups of servo cylinders work synchronously and can act on the two groups of extending shafts to drive the stamping component 4 to complete a smooth and accurate stamping operation, ensuring the docking safety and stamping efficiency of the stamping component 4 and the corresponding stamping lower die base 6.

[0036] See Figure 3 The first vertical adjustment frame 5 is provided with a first side bracket 51 at the bottom, and the first side bracket 51 is fixedly connected to the bottom of the stamping bin. A first setting seat 52 is provided on the top of the first side bracket 51, and a first vertical sliding groove 55 is provided on the first setting seat 52. A sliding limit groove 511 is provided at the right end of the first vertical sliding groove 55. A first movable frame 56 is slidably connected in the first vertical sliding groove 55. The bottom of the first vertical adjustment frame 5 is fixed to the first vertical adjustment bin by embedding the two sets of legs of the first side bracket 51 into the bottom panel of the stamping bin. Adjust the installation of the bottom component of the frame 5, fix the installation of the first setting seat 52 on the top of the first side bracket 51, and establish support for the first vertical sliding groove body 55 through the first setting seat 52, so as to realize the fixed setting of the first vertical sliding groove body 55 in the vertical direction, and the sliding inserts are respectively arranged at the corresponding sliding limit grooves 511 at the rear end edges of the first movable frame 56. The first movable frame 56 establishes a connection with the sliding limit grooves 511 through two groups of sliding inserts, so as to facilitate the movement and limitation of the first movable frame 56 in the first vertical sliding groove body 55.

[0037] Referring to Figure 4 and Figure 5 , the first connecting seat 57 is arranged at the bottom left end of the first moving frame 56, the first limiting seat 58 is arranged at the top left side of the first connecting seat 57, the first fixed pin 59 is arranged on the first limiting seat 58, the first connecting sleeve 510 is arranged on the first fixed pin 59, the first moving frame 56 and the first connecting seat 57 are integrally formed at the bottom left end, the overall structural performance of the first moving frame 56 and the first connecting seat 57 can realize the limiting connection of the first limiting seat 58, the adjustment and control of the first connecting sleeve 510 on the first extension shaft 27 through the first vertical adjusting frame 5 are ensured, the through holes with the same area as the first connecting sleeve 510 are arranged at the positions corresponding to the first connecting sleeve 510 of the first limiting seat 58 and the first fixed pin 59, and the first fixed pin 59 is arranged on the panel of the first limiting seat 58.

[0038] The first limiting shell is arranged at the position corresponding to the first vertical sliding groove body 55 in the inner wall of the right panel of the stamping bin, the first balance cylinder 54 is arranged at the bottom center of the first setting seat 52, a group of first damping frames 53 are arranged on the front and back sides of the first balance cylinder 54, the first vertical sliding groove body 55 is transversely installed through the first limiting shell of the right panel of the stamping bin, and vertical support is realized on the first side support 51 in cooperation with the bottom panel of the stamping bin, so that stable support of the stamping bin on the overall component structure of the first vertical adjusting frame 5 is established, the installation firmness of the first vertical adjusting frame 5 is ensured, the output end of the first balance cylinder 54 is fixedly connected with the bottom center of the first moving frame 56, and the speed detection sensor is arranged at the bottom of the rear end wall plate of the stamping bin, that is, during the movement of the first extension shaft 27 downward controlled by the first servo assembly 2, whether the speed detection sensor judges the speed of the first extension shaft 27 and whether the speed of the first extension shaft 27 is adjusted by the first balance cylinder 54.

[0039] If the speed detection sensor detects that the speed of the first extension shaft 27 is too fast, the first balance cylinder 54 is extended to limit the stamping speed of the first extension shaft 27, so as to avoid over-stamping; if it is detected that the speed of the first extension shaft 27 is not enough, the first balance cylinder 54 is retracted to drive the accelerated downward pressure of the first extension shaft 27, so as to avoid the situation that the stamping is not in place; during the work of the first servo assembly 2, the vibration generated by the first vertical adjusting frame 5 is eliminated by the first damping frame 53, so as to avoid the negative influence of mechanical vibration on stamping work.

[0040] Referring to Figure 6The top of the inner cavity of the support base 1 is provided with a stamping installation base 61 corresponding to the stamping lower die seat 6, the edge of the stamping installation base 61 is respectively provided with a set of extension connecting frames 62, the bottom of the stamping installation base 61 is respectively provided with a set of connecting damping frames 63, the bottom of the connecting damping frame 63 is respectively provided with a set of connecting rods 64, the bottom of the connecting rod 64 is respectively provided with a turning shaft pin 65, the turning shaft pin 65 is respectively provided with a set of side positioning seats 66 close to one side of the side wall of the support base 1, the top of the inner cavity of the support base 1 is fixed and supported by the stamping installation base 61, and the stamping installation base 61 is provided with an ejection pin 67 meeting the production needs on the panel, so that the workpiece product after stamping can be ejected from the stamping lower die seat 6 under the cooperation of the control signal, the workpiece product is convenient for workers to take out, the stamping installation base 61 is provided with four sets of extension connecting frames 62 embedded in the wall plate of the top of the inner cavity of the support base 1, so as to fixedly support the four sets of positioning columns, and the connecting damping frame 63 is fixedly connected with the side panel of the support base 1 through the connecting rod 64 and the turning shaft pin 65, that is, during the stamping work, the vibration of the auxiliary support frame 7 can be transmitted into the stamping installation base 61 through the positioning column and the extension connecting frame 62, and the vibration energy of the stamping lower die seat 6 and the auxiliary support frame 7 is uniformly released by the connecting damping frame 63, so as to reduce the negative influence of mechanical vibration on the stamping assembly in the stamping bin.

[0041] The double-point closed precision press based on servo control provided by the embodiment of the application can realize the double-point servo signal downward pressure output of the stamping assembly 4 extending forward and backward respectively through the mirror image output of the first servo assembly 2 and the second servo assembly 3, balance the stamping stress of the stamping assembly 4, and improve the stamping effect on the workpiece product. When the two groups of servo cylinders are subjected to the servo movement signals emitted by the two groups of servo motors, the two groups of extension shafts are controlled to be pressed downward synchronously, drive the stamping assembly 4 and the stamping lower die seat 6 to be connected, and realize the stamping treatment of the workpiece placed in the stamping lower die seat 6. During the upward and downward movement of the two groups of extension shafts, the moving frame is controlled to move up and down by the two groups of balance cylinders, the stamping and retraction control of the two groups of extension shafts are realized by the two groups of servo cylinders, and the accuracy of the press working assembly is ensured.

[0042] Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited to this. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will fall within the protection scope of the present disclosure.

Claims

1. A double-point closed precision press based on servo control, characterized in that: The invention comprises a support base (1), a first servo assembly (2) and a second servo assembly (3), wherein a stamping chamber is provided above the support base (1), a servo setting chamber is provided above the stamping chamber, the first servo assembly (2) is provided at the right end of the inner cavity of the servo setting chamber, the first servo assembly (2) and the second servo assembly (3) are mirror-imaged, a stamping lower die base (6) is provided in the stamping chamber, a stamping assembly (4) is provided just above the stamping lower die base (6), a first vertical adjustment frame (5) is provided on the inner wall of the right side panel of the stamping chamber, the first vertical adjustment frame (5) is movably connected to the output device of the first servo assembly (2), a group of auxiliary support frames (7) are respectively provided at the four corners of the stamping chamber, a positioning column is provided at the bottom of each of the auxiliary support frames (7), and an elastic support frame is provided inside each of the positioning columns; Wherein, a first side bracket (51) is provided at the bottom of the first vertical adjustment frame (5), the first side bracket (51) is fixedly connected to the bottom of the stamping bin, a first setting seat (52) is provided at the top of the first side bracket (51), a first vertical sliding groove (55) is provided on the first setting seat (52), a sliding limit groove (511) is provided at the right end of the first vertical sliding groove (55), and a first moving frame (56) is slidably connected in the first vertical sliding groove (55); Wherein, a first limiting shell is provided on the inner wall of the right side panel of the stamping bin corresponding to the first vertical sliding groove (55), a first balancing cylinder (54) is provided at the center of the bottom of the first setting seat (52), an output end of the first balancing cylinder (54) is fixedly connected to the center of the bottom of the first moving frame (56), and a group of first shock-absorbing frames (53) are respectively provided on the front and rear sides of the first balancing cylinder (54); Wherein, a second vertical adjustment frame is provided on the inner wall of the left side panel of the stamping bin, which is arranged in a mirror image with the first vertical adjustment frame (5), and the second vertical adjustment frame is movably connected to the output device of the second servo assembly (3); A stamping mounting base (61) is provided at the top of the inner cavity of the support base (1) corresponding to the stamping lower die base (6), a group of extension connecting frames (62) are provided on the edges of the stamping mounting base (61), a group of connecting shock absorbing frames (63) are provided at the four corners of the bottom of the stamping mounting base (61), a group of connecting rods (64) are provided at the bottom of each connecting rod (64), a steering shaft pin (65) is provided at the bottom of each connecting rod (64), and a group of side positioning seats (66) are provided on the side of the steering shaft pin (65) close to the side wall of the support base (1); The bottom of the auxiliary support frame (7) is embedded in the extension connection frame (62) provided in the inner cavity of the support base (1) through a positioning column, and cooperates with the elastic support frame to reduce the vibration effect on the stamping bin.

2. A servo-controlled double-point closed precision press according to claim 1, characterized in that: The first servo assembly (2) comprises a first servo transmission frame (21), a first servo motor (22) is provided at the left end of the bottom of the first servo transmission frame (21), a first servo cylinder (24) is provided at the right end of the bottom of the first servo transmission frame (21), a first extension shaft (27) is provided at the output end of the bottom of the first servo cylinder (24), a first connecting pin (28) is provided at the bottom of the first extension shaft (27), a first anti-slip frame (29) is provided at the bottom of the first connecting pin (28), and a first abutting seat (210) is provided at the bottom of the first anti-slip frame (29).

3. A servo-controlled double-point closed precision press according to claim 2, characterized in that: A first mounting limit frame (26) is provided at the bottom of the first servo cylinder (24), and the bottom of the first servo cylinder (24) is fixedly arranged on the bottom panel of the stamping chamber through the first mounting limit frame (26). A first fixing seat (23) is provided at the outer end of the top of the first servo cylinder (24), and a plurality of first reinforcing support rods (25) are evenly arranged between the first fixing seat (23) and the first mounting limit frame (26).

4. A servo-controlled double-point closed precision press according to claim 2, characterized in that: A group of bridge-type connecting frames (8) are respectively provided at the left and right ends of the top of the punching assembly (4), and the center of the right end bridge-type connecting frame (8) is fixedly connected to the first abutting seat (210) below the first servo assembly (2).

5. A servo-controlled double-point closed precision press according to claim 1, characterized in that: A first connecting seat (57) is provided at the left end of the bottom of the first movable frame (56), a first limiting seat (58) is provided at the top of the left side of the first connecting seat (57), a first fixing pin (59) is provided on the first limiting seat (58), and a first connecting sleeve (510) is provided on the first fixing pin (59).

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