Background
The bending machine belongs to one of forging machines and is mainly used in the metal processing industry. The product is widely applicable to special machinery and complete equipment required by aviation, light industry, metallurgy, automobiles, electric power, electric appliances and other industries.
At present, due to the improvement of the degree of automation, under the condition that the rigidity and strength of the forging machine can meet the working tasks, the weight of the machine is always designed to be simpler and better, and the hydraulic technology is applied, so that the original design is eliminated, the structure of the machine is lighter and lighter, and the cost of the machine is greatly reduced. However, the bending machine also has a plurality of problems, in the use process, the sliding blocks and the workbench can generate deflection deformation, so that a workpiece to be bent is unevenly bent, and in addition, for a multi-cylinder large-tonnage bending machine, the workbench can generate certain deformation due to the length and the dead weight, so that the depth of an upper die entering a lower die in the bending process is inconsistent in the bending whole length, the bending precision is influenced, and therefore, the bending machine needs deflection compensation.
Through retrieval, chinese patent number ZL201120063045.5, the authorized bulletin date is 10 months and 26 days in 2011, and the invention is named as: the application comprises an upper oblique iron group and a lower oblique iron group which are arranged between a table top seat and a cover plate of the bending machine, wherein the lower oblique iron group comprises a certain number of lower oblique irons, all lower oblique irons are inlaid and fixed on a lower fixing plate, the plane of the lower oblique iron is supported in the table top seat of the bending machine downwards, and the inclined plane of the lower oblique iron is upwards; the upper oblique iron group comprises a certain number of upper oblique irons, all the upper oblique irons are inlaid and fixed on an upper fixing plate and are fixed with a cover plate through fixing plate base plates, the upper oblique irons correspond to the lower oblique irons one by one, and the inclined planes of the upper oblique irons are downwards supported on the inclined planes of the lower oblique irons; the inclination of all the upper inclined irons in the upper inclined iron group and the inclination of all the lower inclined irons in the lower inclined iron group are gradually increased from two sides to the middle; and one side of the bending machine table top seat is provided with a power mechanism, and the power mechanism is connected with the lower fixing plate. The application can drive the lower fixing plate and all lower oblique iron fixing plates on the lower fixing plate to move in the left-right direction through the power mechanism, so that the deflection compensation function is realized. However, the application has the disadvantages that: the transmission device of the mechanism is complex, heavy and inconvenient to operate.
Disclosure of Invention
The invention aims to provide a deflection compensation device for a workbench of a bending machine, which solves the technical problems that a deflection compensation transmission mechanism is complex and inconvenient to operate.
The aim of the invention can be achieved by the following technical scheme:
the bending machine workbench deflection compensation device comprises a bending machine frame and a lower die holder, wherein a platform seat is fixedly arranged on the bending machine frame, a compensation seat is fixedly arranged on the platform seat, a deflection compensation mechanism is arranged in the compensation seat, the lower die holder is arranged on the deflection compensation mechanism, end closure plates are fixedly arranged at two ends of the compensation seat, and the end closure plates are used for limiting the installation of the lower die holder;
the deflection compensation mechanism comprises a motor seat plate and a guide seat plate which are fixedly arranged in a compensation seat, a plurality of jacking plates are connected to the guide seat plate in a sliding and penetrating mode, a driving motor is fixedly installed on the motor seat plate, a driving mechanism is installed at the output end of the driving motor, and the driving mechanism is used for driving the jacking plates to move in a lifting mode.
As a further scheme of the invention: the driving mechanism comprises a driving screw fixedly arranged at the output end of the driving motor, a plurality of first lower inclined blocks are connected to the driving screw in a threaded mode, the first lower inclined blocks are arranged at the bottom of the inner side of the compensation seat in a sliding mode, an upper wedge block is connected to the first lower inclined blocks, and the jacking plate is fixedly connected to the upper end of the upper wedge block.
As a further scheme of the invention: the upper end of the lower inclined block I is fixedly provided with a supporting block I, and the lower end of the upper wedge block I is fixedly provided with a limiting block matched with the supporting block I.
As a further scheme of the invention: the lower inclined block is characterized in that a guide groove is formed in the lower end of the lower inclined block, and a limit seat plate which is in sliding fit with the guide groove is fixedly arranged in the compensation seat.
As a further scheme of the invention: the guide groove is internally and fixedly provided with a guide connecting rod, and the guide connecting rod is connected to the limit seat plate in a sliding and penetrating way.
As a further scheme of the invention: the driving mechanism comprises a driving rod fixedly mounted at the output end of the driving motor, a plurality of thread sections are uniformly arranged on the periphery of the driving rod, the thread sections comprise forward threads and reverse threads with the same length, lower inclined blocks II are connected to the forward threads and the reverse threads in a threaded mode, an upper wedge block II is arranged between the two groups of lower inclined blocks II, and the jacking plate is fixedly connected to the upper wedge block II.
As a further scheme of the invention: the lower end of the upper wedge block II is provided with two groups of connecting inclined planes, and the upper end of the lower inclined block II is provided with a driving inclined plane matched with the connecting inclined planes.
As a further scheme of the invention: the two sides of the upper wedge block II are fixedly provided with support blocks II, and the upper end of the lower inclined block II is provided with a plane end matched with the support blocks II.
As a further scheme of the invention: the upper wedge block I or the upper wedge block II is fixedly connected with a connecting spring, and the upper end of the connecting spring is fixedly connected to the guide seat plate.
The invention has the beneficial effects that:
(1) Simultaneously, one driving motor and one driving mechanism are adopted to realize synchronous driving of a plurality of jacking plates, and the whole deflection compensation device has a simple structure and is convenient to operate.
(2) The lifting of the upper wedge block I is driven by utilizing the inclined plane at the upper end of the lower inclined block I, the inclined plane angles of the plurality of lower inclined blocks I are different according to different deflection needing compensation, and the inclined plane angles are adjusted according to the actual deflection compensation, so that the deflection compensation precision of bending is ensured.
(3) Because the first lower inclined block moves under the action of screw rod transmission, the first lower inclined block needs to be kept stable in movement, so that the first upper wedge block is stably driven, meanwhile, the limiting seat plate plays a limiting role in sliding of the first lower inclined block, the first lower inclined block is ensured to be always connected with the first upper wedge block, and stable support of the lower die holder is ensured.
(4) The two groups of lower inclined blocks II are driven to move oppositely or separately by the forward threads and the reverse threads with opposite steering, the upper wedge block II is driven to lift by utilizing the inclined plane on the lower inclined block II, so that the upper wedge block II is driven to move in a lifting manner, the compensation adjustment of bending deflection is realized, the symmetrical two-side driving ensures the stable lifting of the upper wedge block II, and meanwhile, the whole upper wedge block II can be ensured to be kept stable under the bending pressure.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1-2, the invention discloses a deflection compensation device for a workbench of a bending machine, which comprises a bending machine frame 1 and a lower die holder 9, wherein a platform seat 7 is fixedly arranged on the bending machine frame 1, a compensation seat 8 is fixedly arranged on the platform seat 7, a deflection compensation mechanism is arranged in the compensation seat 8, the lower die holder 9 is arranged on the deflection compensation mechanism, end closure plates 10 are fixedly arranged at two ends of the compensation seat 8, and the end closure plates 10 are used for limiting the installation of the lower die holder 9.
The upper portion rotation of frame 1 of bending is provided with connects axostylus axostyle 2, and the connection axostylus axostyle 2 is last to be fixedly provided with two sets of driving frames 3, and it is provided with two sets of actuating cylinder 4 to bend to rotate on frame 1, and the output of actuating cylinder 4 rotates to be connected on driving frame 3, and one side that actuating cylinder 4 was kept away from to driving frame 3 rotates to be connected with upper die holder 5, and upper die holder 5 sliding connection is on frame 1 of bending, and upper die holder 5 lower extreme demountable installation has upper die 6 of bending, realizes the processing of bending to panel through the lift of upper die 6 of bending.
When the plate is required to be bent, the plate is placed on the lower die holder 9, a piston rod of the driving oil cylinder 4 stretches outwards to drive the driving frame 3 to rotate along the connecting shaft rod 2, the driving frame 3 drives the upper die holder 5 to slide downwards along the bending frame 1, the upper die holder 5 drives the bending upper die 6 to move downwards, the plate placed on the lower die holder 9 is bent, a deflection compensation mechanism arranged in the compensation seat 8 performs deflection compensation on the bending during the bending, and the arrangement of the compensation seat 8 and the end socket plate 10 ensures the stability of installation of the deflection compensation mechanism and the lower die holder 9.
In order to improve the efficiency of bending processing and reduce the adjustment difficulty of bending parameters, the dynamic bending force adjusting function can automatically detect the loads of the left driving oil cylinder and the right driving oil cylinder 4 in real time, and even if the workpiece bending processing is not located at the left middle position and the right middle position of the workbench, the machine tool can automatically adjust the pressures of the left driving oil cylinder and the right driving oil cylinder 4, so that the complicated early-stage debugging process is avoided, and the bending efficiency is improved while the bending precision is ensured.
The bending pressure can be detected by a pressure sensor at the driving oil cylinder 4, and can be uniformly distributed at the upper die holder 5, so that the pressure detection of bending points at different positions is ensured.
The deflection compensation mechanism comprises a motor seat plate 11 and a guide seat plate 17 which are fixedly arranged in the compensation seat 8, a plurality of jacking plates 16 are connected to the guide seat plate 17 in a sliding and penetrating mode, a driving motor 12 is fixedly installed on the motor seat plate 11, a driving mechanism is installed at the output end of the driving motor 12, and the driving mechanism is used for driving the jacking plates 16 to move in a lifting mode.
The jacking plate 16 is used for jacking the lower die holder 9, the jacking plate 16 is driven to move in a lifting mode under the action of the driving mechanism, the guide seat plate 17 is used for guiding lifting of the jacking plate 16, stability of the jacking plate 16 in the lifting process is guaranteed, meanwhile, the jacking plate 16 is arranged side by side, deflection compensation of different positions of the lower die holder 9 is achieved, synchronous driving of the jacking plates 16 is achieved through the driving motor 12 and the driving mechanism, and the whole deflection compensation device is simple in structure and convenient to operate.
The driving mechanism comprises a driving screw rod 13 fixedly arranged at the output end of a driving motor 12, a plurality of first lower inclined blocks 14 are connected to the driving screw rod 13 in a threaded mode, the first lower inclined blocks 14 are arranged at the bottom of the inner side of the compensation seat 8 in a sliding mode, an upper wedge block 15 is connected to the first lower inclined blocks 14, and the jacking plate 16 is fixedly connected to the upper end of the upper wedge block 15.
The driving motor 12 drives the driving screw 13 to rotate, the screw rod transmission principle is utilized to drive the lower inclined block I14 to slide reciprocally in the compensation seat 8, when the lower inclined block I14 slides towards one side of the principle driving motor 12, the inclined surface of the lower inclined block I14 drives the upper wedge block I15 to move upwards, so that the jacking plate 16 is driven to slide upwards along the guide seat plate 17, and the jacking plate 16 jacks the lower die seat 9, so that deflection compensation for bending processing is realized.
The lifting of the upper wedge block I15 is driven by utilizing the inclined plane at the upper end of the lower inclined block I14, the inclined plane angles of the plurality of lower inclined blocks I14 are different according to different deflection needing compensation, and the inclined plane angles are adjusted according to the actual deflection compensation, so that the deflection compensation precision of bending is ensured.
The upper end side of the first lower inclined block 14 is fixedly provided with a first supporting block 143, and the lower end side of the first upper wedge block 15 is fixedly provided with a limiting block 152 matched with the first supporting block 143.
The lower die holder 9 is supported by the jacking plate 16 and the first upper wedge block 15, and the lower die holder 9 needs to ensure stability during bending, so that the first supporting block 143 and the first limiting block 152 are matched to limit the lowering of the first upper wedge block 15, and when the first supporting block 143 is attached to the first limiting block 152, the first upper wedge block 15 stops lowering, and at the moment, the deflection compensation mechanism cannot play a role in compensating deflection during bending.
The lower end of the first declination block 14 is provided with a guide groove 141, and the compensation seat 8 is internally and fixedly provided with a limit seat plate 19 which is in sliding fit with the guide groove 141.
The horizontal movement of the first lower inclined block 14 and the lifting movement of the first upper wedge block 15 are driven by the upper inclined surface, the first lower inclined block 14 slides under the action of the driving screw 13 and the driving motor 12 to drive the first upper wedge block 15 to lift, and the first lower inclined block 14 moves under the action of screw rod transmission, so that the first lower inclined block 14 is required to be stably moved, the stable driving of the first upper wedge block 15 is realized, meanwhile, the limiting seat plate 19 plays a limiting role on the sliding of the first lower inclined block 14, the first lower inclined block 14 is ensured to be always connected and supported with the first upper wedge block 15, and the stable supporting of the lower die holder 9 is ensured.
The guide groove 141 is fixedly provided with a guide connecting rod 142, the guide connecting rod 142 is connected to the limit seat plate 19 in a sliding and penetrating manner, and the guide connecting rod 142 and the limit seat plate 19 are in sliding fit to guide the movement of the first lower inclined block 14 and ensure stable driving of lifting of the first upper wedge block 15.
Example two
The driving mechanism comprises a driving rod 20 fixedly mounted at the output end of the driving motor 12, a plurality of thread sections are uniformly arranged on the periphery of the driving rod 20, each thread section comprises a forward thread 201 and a reverse thread 202 which are identical in length, a lower inclined block II 21 is connected to each of the forward thread 201 and the reverse thread 202 in a threaded mode, an upper wedge block II 22 is arranged between the two lower inclined blocks II 21, and the jacking plate 16 is fixedly connected to the upper wedge block II 22.
Two groups of connecting inclined planes 221 are arranged at the lower end of the second upper wedge block 22, and a driving inclined plane matched with the connecting inclined planes 221 is arranged at the upper end of the second lower inclined block 21.
When the driving motor 12 drives the driving rod 20 to rotate, the two groups of lower inclined blocks II 21 are driven to move in opposite directions or in opposite directions simultaneously by the forward threads 201 and the reverse threads 202 which are opposite in rotation, the upper wedge block II 22 is driven to lift by the inclined surface on the lower inclined block II 21, so that the upper wedge block II 22 is driven to lift, the compensation adjustment of bending deflection is realized, the symmetrical two-side driving ensures the stable lifting of the upper wedge block II 22, simultaneously, the whole upper wedge block II 22 can be ensured to be kept stable under the bending pressure,
the two sides of the upper wedge block II 22 are fixedly provided with a support block II 222, and the upper end of the lower inclined block II 21 is provided with a plane end matched with the support block II 222.
The upper wedge block I15 or the upper wedge block II 22 is fixedly connected with a connecting spring 18, the upper end of the connecting spring 18 is fixedly connected to the guide seat plate 17, the upper wedge block I15 is provided with a first spring groove 151 for installing the connecting spring 18, and the upper end of the upper wedge block II 22 is provided with a second spring groove 223 for installing the connecting spring 18.
The upper wedge block is driven to slide upwards through the lower inclined block, the upper wedge block drives the jacking plate 16 to move upwards to jack the lower die holder 9, so that the compensation of bending deflection is realized, and after bending is finished, the lower inclined block resets under the action of screw rod transmission, the upper wedge block moves downwards in a rebound mode under the elastic action of the connecting spring 18, and the upper wedge block is ensured to reset.
The working principle of the invention is as follows: the driving motor 12 drives the driving screw 13 or the driving rod 20 to rotate, and the screw rod transmission principle is utilized to drive the lower inclined block I14 or the lower inclined block II 21 to horizontally move, so that the upper wedge block I15 or the upper wedge block II 22 is driven to lift and move, and the upper wedge block drives the jacking plate 16 to move upwards to jack and press the lower die holder 9, so that the bending deflection compensation is realized.
The foregoing describes one embodiment of the present invention in detail, but the description is only a preferred embodiment of the present invention and should not be construed as limiting the scope of the invention. All equivalent changes and modifications within the scope of the present invention are intended to be covered by the present invention.