The spin forming method of on-circular cross-section part and equipment thereof
Technical field
The present invention relates to the Technology of Plastic Processing field, particularly a kind of spin forming method of on-circular cross-section part and equipment thereof.
Background technology
Traditional spin forming method can be divided into two classes, i.e. conventional spinning (not flow turning) and shear spinning (flow turning).When carrying out conventional spinning or shear spinning, workpiece is installed on the machine tool chief axis, and rotates with the lathe main shaft, and spinning roller radially reaches axial feed motion along axis of workpiece, thereby is processed into the axial symmetry thin-walled hollow parts (single shaft spinning part) of different shape.
A kind of new spin forming method had appearred in recent years, when mould pressing, workpiece is installed on one can carry out at the same time or separately that vertical, horizontal moves and do in horizontal plane on the workbench of yaw motion along machine tool chief axis, and spinning roller is made revolution and spinning motion around workpiece, and can do feed motion along the revolution radial direction simultaneously, thereby process the non-axisymmetric parts (multiaxis spinning part) that is parallel to each other between the each several part axis or tilts.
But because in the above-mentioned spin forming method, the spinning roller device all is that the electric rotating machine of common stepper motor or servomotor and so on is realized by driving moving of ball screw assembly, along the horizontal feed motion of lathe, because the acceleration that electric rotating machine can produce is less relatively, thereby spinning roller all is static along the feed motion of workpiece radius direction, the commutation that is feed speed and speed is all relatively slow, so each cross section of the part that processes all is circular.And be the shaping of the sheet metal part of non-circle for the cross section, if adopt spinning forming process, then need spinning roller to form bigger acceleration with respect to the rotary speed of workpiece self along the feed motion of workpiece radius direction, promptly along with the rotation of machine tool chief axis, spinning roller can commutate fast along the horizontal feed motion of lathe, adopt common electric rotating machine can't realize this requirement, so since spinning forming process comes out, also be not used in the shaping of on-circular cross-section sheet metal part at all.The general employing of this class part processes complex-shaped punch-die earlier, and the method for drawing, or employing then earlier is divided into several block-shaped simple parts with part and is formed separately, and then the processing of integrally welded method.This has not only increased operation, has prolonged the process-cycle, and to the situation of multi-varieties and small-batch, must make that production cost is too high, if adopt welding method, also can reduce the mechanical property of material, influences the normal use of part.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, the spin forming method of the on-circular cross-section part that a kind of operation is few, the process-cycle short, production cost is also lower is provided.
Another object of the present invention is to provide a kind of mould pressing equipment that is used for the on-circular cross-section part of said method, this device structure is simple, the machining accuracy height.
The present invention is achieved through the following technical solutions: a kind of spin forming method of on-circular cross-section part comprises the steps:
(1) on console, works out control program according to the shape and size of on-circular cross-section part, parameters such as the feeding track of setting spinning roller and feed speed;
(2) workpiece is installed, is started the servomotor feed arrangement then, regulate vertically moving the assigned address that platform makes the close workpiece of spinning roller arrival;
(3) start main axis rotation, main axis rotation drives the workpiece rotation;
(4) start the linear electric motors feed arrangement simultaneously, control spinning roller device lateral moves, and the rapport between maintenance and the main axis rotation angle, servomotor feed arrangement control simultaneously vertically moves platform drive spinning roller device and vertically moves, the length feed of spinning roller and traverse feed are carried out simultaneously, and workpiece spinning is made component shaping;
More than each step all on console, control and finish.
Wherein, the feeding track of the described spinning roller of step (1) comprises the feeding number of times of the spinning roller amount of feeding and main axis rotation spinning roller during one week.
Workpiece is installed described in the step (2) to be specially: earlier workpiece is stuck on the spindle nose of main shaft, drives the tail ejection device by Hydraulic Station then it is clamped.
Step (3) and step (4) are carried out simultaneously, and keep the rapport between main axis rotation angle and the spinning roller feeding track.
A kind of mould pressing equipment that is used for the on-circular cross-section part of above method of the present invention is connected to form by lathe and console circuit; Wherein, lathe comprise main spindle box, lathe bed, vertically move platform, tail ejection device, servomotor feed arrangement, Hydraulic Station, linear electric motors feed arrangement and spinning roller device; Main spindle box places the lathe bed left end, the tail ejection device place the lathe bed right-hand member and with the coaxial setting of main spindle box, Hydraulic Station is connected with the tail ejection device by oil pipe, the servomotor feed arrangement places the lathe bed right-hand member, vertically move the platform two ends and be provided with vertical line slideway, the control of servomotor feed arrangement vertically moves platform line slideway lengthwise movement longitudinally in lathe bed, and the linear electric motors feed arrangement is installed on and vertically moves platform one side, and the spinning roller device places the side of linear electric motors feed arrangement towards the lathe bed center.
Described linear electric motors feed arrangement comprises stator, mover and motor line slideway, and mover places stator interior and moves in stator interior by the motor line slideway, and mover drives the feeding of spinning roller device lateral by the motor line slideway.
Described spinning roller device is fixed on the spinning roller installing rack by spinning roller and constitutes, and the spinning roller installing rack that is used to install spinning roller is fixed in mover one side of linear electric motors feed arrangement.
In order to realize the present invention better, improve the crystallized ability of spinning roller device, have additional the inclined-plane force-increasing mechanism between described linear electric motors feed arrangement and the spinning roller device, described inclined-plane force-increasing mechanism comprises oblique forward block and roller bearing; Described spinning roller device comprises rotary wheel base, horizontal line slideway, spinning roller installing rack and spinning roller; Forward block one end in inclined-plane places the stator interior of linear electric motors feed arrangement to be connected with mover, and the other end is connected by the rotary wheel base of roller bearing with the spinning roller device, and horizontal line slideway is set in the rotary wheel base, and the spinning roller installing rack that is used to install spinning roller is fixed in rotary wheel base one side.
Because the direction of motion of spinning roller device is lathe laterally (x to), so the direction of motion of inclined-plane forward block is made as along machine spindle to (z to), and with the inclined-plane incline direction of inclined-plane forward block and machine spindle to being designed to a less angle α, roller bearing keeps contacting with the inclined-plane of inclined-plane forward block.When the inclined-plane forward block with less strength along z when mobile, by means of the wedge effect on inclined-plane will to the spinning roller device x to the bigger propulsive force of mobile generation, α is more little for angle, the thrust that is produced is just big more, but needed stroke also can be big more, if therefore the lathe size allows and needs the bigger horizontal propulsive force of spinning roller, angle α can select less angle.
The mould pressing equipment of on-circular cross-section part of the present invention, its operation principle is: after regulating the relative position of workpiece and spinning roller, start automatic control program, the drive shaft rotation, thus drive the workpiece rotation; The spinning roller device carries out feed motion according to the actual anglec of rotation of feeding track, feed speed and the machine tool chief axis set, wherein the linear electric motors feed arrangement drives the spinning roller device along moving that lathe laterally repeatedly moves forward and backward fast in main axis rotation within one week, meanwhile, servomotor feed arrangement control vertically move platform along the longitudinal line slideway move, carry out feed motion longitudinally thereby drive the spinning roller device; Because the spinning roller device move in vertical and horizontal, and repeatedly move forward and backward fast, thereby can be configured as the on-circular cross-section part after making workpiece spinning in horizontal realization.
The present invention has the following advantages and effect with respect to prior art:
1, the spin forming method operation of this on-circular cross-section part is few, and process is simple, and the process-cycle is short, and the production efficiency that this can not only improve when producing in enormous quantities when being used for multi-varieties and small-batch simultaneously, also can reduce its cost.
2, the mould pressing equipment of this on-circular cross-section part, simple in structure, the machining accuracy height, its application scenario is also very wide, can be used for directly processing on-circular cross-section single shaft sheet metal part or typical circular cross section single shaft sheet metal part, also can be used for the mould pressing of circular cross-section multiaxis spinning part or on-circular cross-section multiaxis part.
Description of drawings
Fig. 1 is the relativeness schematic diagram of workpiece and spinning roller among the present invention.
Fig. 2 is a kind of structure vertical view of the mould pressing equipment of on-circular cross-section part of the present invention.
Fig. 3 is installed in the linear electric motors feed arrangement that vertically moves on the platform and the structural representation of spinning roller device among Fig. 2.
Fig. 4 is the another kind of structure vertical view of the mould pressing equipment of on-circular cross-section part of the present invention.
Fig. 5 has set up the linear electric motors feed arrangement of inclined-plane force-increasing mechanism and the structural representation of spinning roller device among Fig. 4.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment 1
The spin forming method of a kind of on-circular cross-section part of the present invention comprises the steps:
(1) as shown in Figure 1, on console, set the feeding track (comprising the feeding number of times of the amount of feeding, main axis rotation spinning roller during one week etc.) and the feed speed of spinning roller according to the shape and size of on-circular cross-section part 0;
(2) workpiece is installed, promptly elder generation is stuck in workpiece on the spindle nose of main shaft, and the back drives the tail ejection device by Hydraulic Station it is clamped, and starts the servomotor feed arrangement then, and adjusting vertically moves platform makes spinning roller arrive the assigned address of close workpiece;
(3) start main axis rotation, main axis rotation drives the workpiece rotation;
(4) start the linear electric motors feed arrangement simultaneously, control spinning roller device lateral moves, and the rapport between maintenance and the main axis rotation angle, servomotor feed arrangement control simultaneously vertically moves platform drive spinning roller device and vertically moves, the length feed of spinning roller and traverse feed are carried out simultaneously, and workpiece spinning is made component shaping;
Each step in the above method is all controlled on console and is finished.
A kind of mould pressing equipment that is used for the on-circular cross-section part of above method of the present invention, its structure are connected to form by lathe and console 9 circuit as shown in Figure 2; Wherein, lathe comprise main spindle box 1, lathe bed 2, vertically move platform 3, tail ejection device 4, servomotor feed arrangement 6, Hydraulic Station 5, linear electric motors feed arrangement 7 and spinning roller device 8; Main spindle box 1 places lathe bed 2 left ends, tail ejection device 4 place lathe bed 2 right-hand members and with main spindle box 1 coaxial setting, Hydraulic Station 5 is connected with tail ejection device 4 by oil pipe, servomotor feed arrangement 6 places lathe bed 2 right-hand members, vertically move platform 3 two ends and be provided with vertical line slideway 31,6 controls of servomotor feed arrangement vertically move platform 3 line slideway 31 lengthwise movements longitudinally in lathe bed 2, linear electric motors feed arrangement 7 is installed on and vertically moves platform 3 one sides, and spinning roller device 8 places the side of linear electric motors feed arrangement 7 towards lathe bed 2 centers.
Wherein, the structure that is installed in the linear electric motors feed arrangement 7 that vertically moves platform 3 one sides and spinning roller device 8 as shown in Figure 3, linear electric motors feed arrangement 7 comprises stator 71, mover 72 and motor line slideway 73, mover 72 places stator interior and moves in stator 71 inside along motor line slideway 73, and mover 72 drives 8 traverse feeds of spinning roller device along motor line slideway 73; Spinning roller device 8 is fixed on the spinning roller installing rack 82 by spinning roller 81 and constitutes, and the spinning roller installing rack 82 that is used to install spinning roller 81 is fixed in mover 72 1 sides of linear electric motors feed arrangement 7.
The mould pressing equipment of on-circular cross-section part of the present invention, its operation principle is: after regulating the relative position of workpiece and spinning roller, start main axis rotation, thereby drive the workpiece rotation; Linear electric motors feed arrangement 7 control spinning roller devices 8 carry out horizontal feed motion according to the actual anglec of rotation of feeding track, feed speed and the machine tool chief axis of setting, drive spinning roller device 8 within one week along moving that lathe laterally repeatedly moves forward and backward fast in main axis rotation, meanwhile, servomotor feed arrangement 6 control vertically move platform 3 along the longitudinal line slideway 31 move, carry out feed motion longitudinally thereby drive spinning roller device 8; Because spinning roller device 8 move in vertical and horizontal, and repeatedly move forward and backward fast, thereby can be configured as the on-circular cross-section part after making workpiece spinning in horizontal realization.
Embodiment 2
The spin forming method of the on-circular cross-section part of present embodiment is identical with embodiment 1, the operation principle of the mould pressing equipment of on-circular cross-section part is also identical with embodiment 1, the another kind of structure of the mould pressing equipment of on-circular cross-section part as shown in Figure 4, be the structure of spinning roller device 8 with the difference of embodiment 1, and set up the inclined-plane force-increasing mechanism 10 between linear electric motors feed arrangement 7 and spinning roller device 8.
As shown in Figure 5, have additional inclined-plane force-increasing mechanism 10 between linear electric motors feed arrangement 7 and the spinning roller device 8, wherein inclined-plane force-increasing mechanism 10 comprises inclined-plane forward block 101 and roller bearing 102; Spinning roller device 8 comprises rotary wheel base 83, horizontal line slideway 84, spinning roller installing rack 82 and spinning roller 81; Oblique forward block 101 1 ends place stator 71 inside of linear electric motors feed arrangement 7 to be connected with mover 72, the other end is connected with the rotary wheel base 83 of spinning roller device 8 by roller bearing 102, horizontal line slideway 84 is set in the rotary wheel base 83, and the spinning roller installing rack 82 that is used to install spinning roller 81 is fixed in rotary wheel base 83 1 sides.
Because the direction of motion of spinning roller device 8 is lathe laterally (x to), so the direction of motion of inclined-plane forward block 101 is made as along machine spindle to (z to), and with the inclined-plane incline direction of inclined-plane forward block 101 and machine spindle to being designed to a less angle α, roller bearing keeps contacting with the inclined-plane of inclined-plane forward block 101; When inclined-plane forward block 101 with less strength along z when mobile, by means of the wedge effect on inclined-plane will to the spinning roller device x to the bigger propulsive force of mobile generation, thereby promote the crystallized ability of spinning roller device 8, α is more little for angle, the thrust that is produced is just big more, but needed stroke also can be big more, if therefore the lathe size allows and needs the bigger horizontal propulsive force of spinning roller, angle α can select less angle.
As mentioned above, just can realize the present invention preferably, the foregoing description is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Be that all equalizations of doing according to content of the present invention change and modification, all contained by claim of the present invention scope required for protection.