CN-122007233-A - Servo press with high precision, low inertia and stable pressure maintaining

CN122007233ACN 122007233 ACN122007233 ACN 122007233ACN-122007233-A

Abstract

The invention relates to a servo press with high precision, low inertia and stable pressure maintaining, which comprises a main body frame device, a cooling vibration damper, a symmetrical servo device, a nested transmission device, a high-torque transmission device, a shearing fork pressure maintaining device, a pressure pad stable driving device and a cooling vibration damper, wherein the symmetrical servo device, the nested transmission device, the high-torque transmission device and the cooling vibration damper are positioned at the upper part of the main body frame device, the shearing fork pressure maintaining device and the pressure pad stable driving device are respectively positioned at the middle part and the lower part of the main body frame device, and the shearing fork pressure maintaining device is connected with the main body frame device. The servo press adopts symmetrical servo drive, nested gear drive, hydraulic shear fork pressure maintaining and is provided with a water-cooling vibration reduction structure, has the characteristics of high precision, low inertia, stable pressure maintaining and high operation stability, and is suitable for a metal stamping process with high requirements on machining precision, pressure maintaining stability and equipment operation reliability.

Inventors

WANG CHUANYING
FU XIULI
LI KUN
LI SHOUYE
LIU RUNTAO
PAN YONGZHI
AN YANTAO

Assignees

济南二机床集团有限公司
国重金属成形技术研究(济南)有限公司
济南大学

Dates

Publication Date: 20260512
Application Date: 20260415

Claims (10)

1. The servo press with high precision, low inertia and stable pressure maintaining comprises a main body frame device, a cooling vibration damper and a shearing fork pressure maintaining device, wherein the cooling vibration damper and the shearing fork pressure maintaining device are respectively connected with the main body frame device, the servo press is characterized by also comprising a high-torque transmission device, a pressure pad stable driving device, a nested transmission device and a symmetrical servo transmission device, the nested transmission device and the high-torque transmission device are respectively arranged at the upper part of the main body frame device, the pressure pad stable driving device is arranged at the lower part of the main body frame device, the symmetrical servo transmission device comprises a motor B, a driving shaft B and a gear C, a cavity is arranged in the motor, the driving shaft B directly stretches into the motor cavity and is directly connected with the rotor, the driving shaft B is a gear shaft, a gear C is arranged in the middle of the driving shaft B, the nested transmission device comprises a gear B, a gear sleeve and a supporting shaft B, the gear B and the gear sleeve are arranged on the supporting shaft B, the gear sleeve is arranged in the gear B and meshed with the gear C, a shoulder B and an interdental groove B are arranged on the outer side of the gear sleeve, the high-torque transmission device comprises a wrapping gear A and a supporting shaft A, a shoulder A and an interdental groove A are arranged on the outer side of the gear A and meshed with the gear sleeve, the shoulder A is matched with the interdental groove B, eccentric circles are symmetrically arranged on the front side and the rear side of the gear A, and connecting rods are sleeved on the eccentric circles.
2. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the main body frame comprises a box base, a machine body upright post, a transmission box cover, a sliding block, an upper die and a lower die, the machine body upright post is welded at the upper end of the box base, the transmission box is welded at the upper end of the machine body upright post, the sliding block, the upper die and the lower die are sequentially arranged between the transmission box and the box base, a cavity is formed in the box base, a guide plate is arranged on the inner side of the cavity, a motor installation seat A is welded on the outer side of the box base, a hinge seat A is arranged on the upper end face of the sliding block, a shearing guide groove is formed in the inner side of the sliding block.
3. The servo press with high precision, low inertia and stable pressure maintaining according to claim 2 is characterized in that foundation installation seats are respectively arranged at four corners of the box base, a cavity is arranged in the middle of the box base, convex plates are symmetrically arranged at the front side and the rear side of the cavity, rectangular sliding rails are arranged at the inner side of a machine body upright post, a transmission box cover is arranged at the upper end of the transmission box, a supporting shaft hole B, a driving shaft hole and a supporting shaft hole A are symmetrically arranged at the front end surface and the rear end surface of the transmission box, a supporting shaft B, a driving shaft and a supporting shaft A are respectively arranged at the supporting shaft hole B, the driving shaft hole and the supporting shaft hole A, protruding blocks are respectively arranged at four corners of a sliding block and an upper die, the protruding blocks of the sliding block and the upper die are matched with the rectangular sliding rails of the machine body upright post, protruding blocks are also arranged at four corners of the lower die and are arranged at the bottom of the rectangular sliding rails of the machine body upright post through the protruding blocks, the sliding block is of a hollow cuboid structure, the shearing fork guide grooves are symmetrically arranged on the inner surface of the sliding block, and a group of rib plates are respectively symmetrically arranged at the front side and rear side surfaces of the sliding block.
4. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the number of the motors B is four, two driving shafts B are arranged in parallel up and down, each two motors B are symmetrically arranged at two ends of the upper driving shaft B and the lower driving shaft B, and the driving shafts B extend into the motors B and are rigidly connected with the rotor.
5. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the gear B is internally provided with internal splines, the gear B is provided with two gears which are horizontally arranged left and right, the gear B is positioned in the middle of an upper driving shaft B and a lower driving shaft B, the right side gear B is meshed with a gear C on the driving shaft B, the left side gear B is meshed with the right side gear B, the gear sleeve is externally provided with external splines, the gear sleeve is provided with two gears which are matched with the internal splines of the gear B through the external splines, the gear B and the gear sleeve are sleeved on the supporting shaft B in an empty mode, the two ends of the gear B and the gear sleeve are respectively provided with sleeves, and the shoulder B and the inter-tooth groove B are respectively provided with two gears which are arranged in a staggered and symmetrical mode.
6. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the convex shoulder A and the inter-tooth grooves A are respectively provided with a plurality of staggered symmetrical arrangement, the gears A are sleeved on the supporting shaft A in an empty mode, the two ends of the gears A are respectively provided with sleeves, the number of the connecting rods is four, the middle of each connecting rod is provided with a circular ring, the two ends of each connecting rod are provided with circular holes, and the circular holes at the upper ends of the connecting rods are provided with hinge shafts B.
7. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the shearing and pressure maintaining device comprises a shearing rod, a hydraulic cylinder and a shearing and hinging shaft, the shearing and hinging shaft is arranged below a sliding block of the main body frame, the shearing and hinging shaft is arranged in the shearing and guiding groove, and the hydraulic cylinder is arranged on the shearing and hinging shaft.
8. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the pressure pad stable driving device comprises a hydraulic washer, a push rod, a push plate, an upper arc plate, a driving toothed plate, a lower arc plate, a driving gear and a motor A, wherein the hydraulic washer is arranged above a lower die in the main body frame device, and the push plate, the upper arc plate, the driving toothed plate, the lower arc plate, the driving gear and the motor A are respectively arranged below a sliding block in the main body frame device.
9. The servo press with high precision, low inertia and stable pressure maintaining according to claim 8, wherein the hydraulic gasket is of a hollow rectangular frame structure, four corners of the lower end surface of the hydraulic gasket are respectively provided with round blind holes with internal threads, four corners of the upper end surface of the push plate are respectively provided with round blind holes with internal threads, the hydraulic gasket and the round blind holes on the push plate are coaxially arranged, a plurality of push rods are arranged, two ends of each push rod are respectively provided with external threads, the hydraulic gasket is connected with the push plate through the push rods, the push rods are connected with a main body frame device, the middle part of the push plate is provided with round through holes with internal threads, the top of the upper arc plate is provided with an external thread cylinder, the upper arc plate external thread cylinder is matched with the round through holes with internal threads of the push plate and is fixed through a fastening nut, the height of the push plate can be adjusted through the external thread cylinder, the upper arc plate and the lower arc plate are respectively semicircular arc plates, the number of the upper arc plate and the lower arc plate are respectively welded on the upper end surface and the lower end surface of the two driving tooth plates, the front end surface and the rear end surface of the driving tooth plate are respectively provided with a guide groove, and the inner side of the driving tooth plate is provided with a rack; the drive gear is located two drive pinion racks middles, and drive gear is partial tooth gear, and drive gear's toothed portion accounts for central angle 120 degrees, and drive gear locates on drive shaft A, and drive shaft A is driven by motor A, and motor A is connected with motor mount pad A, and motor mount pad A is connected with main body frame.
10. The servo press with high precision, low inertia and stable pressure maintaining according to claim 1, wherein the cooling and vibration reducing device comprises a water cooling box, a water cooling box cover and a water cooling box mounting seat, the water cooling box mounting seat is arranged on two sides of the transmission box, the water cooling box is connected with the water cooling box mounting seat, the water cooling box cover is arranged on the upper end face of the water cooling box, and cooling water is arranged in the water cooling box.

Description

Servo press with high precision, low inertia and stable pressure maintaining Technical Field The invention relates to the technical field of presses, in particular to a servo press with high precision, low inertia and stable pressure maintaining. Background The servo press is used as core equipment for precision metal processing, processes such as stamping, pressure maintaining and the like are realized by means of cooperation of servo drive and mechanical transmission, and the servo press is widely applied to the manufacturing fields such as automobiles, precision machinery and the like. However, in the actual industrial application scenario, the technical scheme of the conventional servo press still has a plurality of technical problems which are difficult to solve, and the specific problems are as follows: 1. the traditional servo press adopts a single servo motor as a power source, and is matched with a multi-stage gear set to realize power transmission and rotation speed adjustment. The transmission mode has obvious short plates, namely, a transmission chain is long, mechanical friction loss generated by links such as gear meshing, bearing rotation and the like is large, so that power transmission efficiency is low, energy utilization rate is insufficient, torque amplifying capacity of multi-stage gear transmission is limited, the problems that enough torque cannot be output, power shortage, machining clamping and the like are easy to occur when the multi-stage gear transmission is faced to heavy plate stamping, thick-wall part forming and other heavy load working conditions are solved, and the rigid connection characteristic of a coupler in a transmission system can introduce unavoidable transmission gaps, impact is easy to generate when equipment is started and stopped and commutated, so that operation stability is reduced, and part abrasion is further increased. 2. The machining precision is not stable enough, and the yield is affected, on one hand, in the gear transmission process, the problems of gear meshing dislocation, uneven tooth surface contact and the like are easy to occur due to machining errors, assembly deviation or long-term running abrasion, the transmission precision is reduced if the weight is low, overload fracture of individual gears is caused, equipment is stopped, on the other hand, a large amount of heat is generated when a transmission system runs at a high speed, so that core parts such as gears, transmission shafts and frames are deformed thermally, the transmission matching precision is changed, meanwhile, vibration generated by the equipment running can be directly transmitted to a stamping die and a workpiece, the stamping position is offset, the pressure maintaining strength is uneven, the machining yield is greatly reduced, and the high-precision machining requirement is difficult to meet. 3. The pressure maintaining function is poor in flexibility, the customized processing capability is poor, the pressure maintaining structure of the traditional servo press is mainly designed into a fixed stroke and fixed pressure machine, the pressure maintaining pressure and the pressure maintaining stroke distance can not be flexibly adjusted according to the processing requirements of parts with different thicknesses and different materials, the pressure maintaining operation in a single mode can only be realized, meanwhile, most of equipment does not have a secondary stamping function, the accurate customized processing can not be completed for complex parts needing step-by-step forming and multiple pressure maintaining, the process adaptability is poor, and the application scene of the equipment is limited. 4. The operation stability of the pressing pad device is insufficient, the service life is shortened, and the pressing pad device is used as an important auxiliary component of a servo press and is mainly used for realizing accurate positioning and auxiliary forming of a workpiece by matching with a die. The conventional pressing pad driving structure adopts a simple lifting guide design, so that the problems of lifting interference, guide deviation, clamping stagnation and the like are easy to occur in the operation process, the friction and abrasion between the pressing pad and the guide mechanism are large, the guide precision is reduced and the operation is blocked after long-term use, the machining precision is influenced, the whole service life of equipment is shortened, and the maintenance cost is increased. 5. The existing servo press is mainly designed independently, and only cooling components such as a cooling fan and a cooling pipeline are independently arranged, or vibration reduction parts such as a vibration reduction pad and a buffer are independently arranged, so that the synergistic effect of cooling and vibration reduction cannot be realized. On one hand, the single cooling structure is difficult to rapidly take away heat of a transmission system, a motor a