A kind of bending and shearing mechanism
Technical field
The present invention relates to a kind of cutting die bending and shearing mechanism.
Background technology
The major function of cutting die bending and shearing mechanism is the CAD figure according to the input computer, and straight line steel edge material is bent into CAD the figure equally size and the cutting die of shape, shears then.
At present; Being seen computer knives bending machine on the market; Its cutting die bending mechanism is the associating parts of forming through two bending heads that left-right symmetric, main body connect together, and tool section is inserted in the centre of two bending heads, and swinging through rotating shaft drive bending parts forms positive angle and negative angle.Cutting mechanism is to promote the same mechanism of similar scissors through cylinder to shear.
In use; It is found that the full-automatic computer knives bending machine adopts universal bending and shearing mechanism to have following shortcoming from principle: during 1) bending angle; Because of the opposite that bends has another one bending head to exist; With the tool section severe interference after the bending, can not accurately form particularly wide-angle of various angles.2) again to having the special-shaped figure of little length wide-angle, because of the bending head on opposite be easy to bent after cutting die collide, make this curved good cutting die distortion partly.Truncation can only be done when 3) this cutting mechanism is sheared, the shearing of other shapes can not be done, such as olecranon.Because of existing defective to cause knives bending machine to have following shortcoming: 1) can not accurately form various angles, cause that to repair the cutter workload behind the tulwar very big from principle.2) because of almost not bending, limited a lot of cutting dies and can not produce special-shaped figure with little length wide-angle.3) shearing can only be done truncation, can not do the shearing of other shapes, has limited to the scope of application of computer knives bending machine.
Summary of the invention
Problem to be solved by this invention provides and a kind ofly can cutting die be bent into bending and shearing mechanism arbitrarily angled and that shear.
The technical scheme that the present invention adopted is: bending and shearing mechanism, and said bending and shearing mechanism comprises body, said body is provided with bending part and cut part; Said bending part comprises servomotor, transmission mechanism, bending axle, bending internal mold, bending external mold, bending external mold elevating mechanism; The bending internal mold is installed on the body, and bending internal mold band one slotted eye supplies the steel edge material to pass, and the bending external mold is installed on the bending axle by bending external mold elevating mechanism and drives to being close to the bending internal mold just or the back side; Drive the bending external mold by servomotor through transmission mechanism and be close to that the mould notch positive and reverse return changes with backfin steel edge material in the bending; Arbitrarily angled so that the steel edge material is bent into, said cut part comprises shears internal mold, shearing external mold and cut part elevating mechanism, and shearing internal mold, shearing external mold are driven by elevating mechanism; Shear the internal mold axial restraint; Shear internal mold band one slotted eye and supply the steel edge material to pass, the shearing external mold is coated on the shearing internal mold and is close to the slotted eye mouth, shears external mold and connects shear axis; Shear axis by servomotor through transmission mechanism transmission driven rotary, thereby drive to shear the steel edge material after the external mold rotational shear bending.
In the such scheme; Transmission mechanism can adopt general various transmission mechanisms; Like gear drive, band transmission etc., preferred said transmission mechanism is a gear drive, said gear drive comprise final drive shaft, up and down mainshaft gear, go up lower transmissioning gear, go up the bending shaft gear, bending shaft gear down; The bending axle comprises bending axle, following bending axle; Said servomotor is connected to final drive shaft through shaft coupling and drives mainshaft gear up and down, and mainshaft gear drives through last lower transmissioning gear respectively and goes up bending shaft gear, following bending shaft gear up and down, goes up bending axle, bending axle rotation down thereby drive; Said bending external mold is installed on down on the bending axle; Said bending external mold elevating mechanism comprises cylinder, is connected to its oscilaltion of bending external mold drive by cylinder through connector and makes it be connected, separate with last bending axle, and last bending axle is provided with the interface holes that matches with the bending external mold and rotates to drive the bending external mold synchronously with following bending axle.
In the such scheme; The cut part elevating mechanism can adopt like general elevating mechanisms such as screw mandrel, cylinders; Preferred said cut part elevating mechanism adopts stepper motor to drive through screw body and shears internal mold, the shearing external mold drops to the shearing station and is connected with shear axis; Preferred said stepper motor drives synchronizing wheel two through synchronizing wheel one, belt; Thereby synchronizing wheel two is fixed with screw mandrel and is driven its rotation, and screw mandrel is provided with the feed screw nut, and the shearing internal mold is fixed in the feed screw nut and upward drives up-down by the feed screw nut; Shearing the internal mold overcoat shears external mold and supports the shearing external mold by the shaft shoulder on the shearing internal mold; Said shear axis comprises shear axis, down cut axle, shears external mold and is connected with last shear axis power through its outside spline, and the down cut axle is provided with and shears the interface holes that external mold matches and rotate to drive the shearing external mold synchronously with last shear axis; Said going up on shear axis, the down cut axle is respectively equipped with shear axis gear, down cut shaft gear, and last shear axis gear, down cut shaft gear mesh by its power that transmits servomotor to drive shear axis, the rotation of down cut axle with last bending shaft gear, following bending shaft gear respectively.
Said shearing internal mold, shear external mold and be provided with the olecranon shear constitution, preferred said olecranon shear constitution is for shearing internal mold and shear the curved or oblique angle transition in shaft shoulder place on the external mold, and shaft shoulder place etc. is higher than and shears the internal mold slotted eye topmost.
The invention has the beneficial effects as follows: the present invention drives bending external mold rotation backfin steel edge material by servomotor through transmission mechanism, does not have interference problem, can accurately be bent into it arbitrarily angled; Control flexibly accurately; And solved the bending problem of the special-shaped figure of little length wide-angle, and shear and adopt the rotational shear mode, can realize the shearing of other shapes; Can be widely used in the cutting die processing of various angles, enlarge the scope of application of computer knives bending machine.
Description of drawings
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described further:
Fig. 1 is the monnolithic case sketch map of the specific embodiment of the invention;
Fig. 2 is the whole interior structural representation of the specific embodiment of the invention;
Fig. 3 is the inside sectional structure sketch map of the specific embodiment of the invention;
Fig. 4 is the bending part structural representation of the specific embodiment of the invention;
Fig. 5 is that the bending external mold of the specific embodiment of the invention rises to sketch map behind the station;
Fig. 6 be the specific embodiment of the invention from the front bending-like attitude sketch map;
Fig. 7 be the specific embodiment of the invention from the back side bending view;
Fig. 8 is shearing internal mold, the shearing external mold mounting structure outline drawing of the specific embodiment of the invention;
Fig. 9 is shearing internal mold, the shearing external mold mounting structure cutaway view of the specific embodiment of the invention;
Figure 10 is shearing internal mold, the shearing external mold sketch map of the specific embodiment of the invention;
Figure 11 is the axial sectional drawing of Figure 10;
Figure 12 is a specific embodiment of the invention shearing condition sketch map;
Figure 13 is the partial enlarged drawing of olecranon shear constitution among Fig. 9
Figure 14 is the cutting die olecranon sketch map after shearing.
The specific embodiment
Like Fig. 1, Fig. 2, shown in Figure 3, bending and shearing mechanism comprises body 1, and body 1 is provided with bending part and cut part.
Bending part comprises servomotor 35, gear drive, bending axle, bending internal mold 30, bending external mold 31, bending external mold elevating mechanism; Gear drive comprise final drive shaft 27, up and down mainshaft gear 28 and 37, go up lower transmissioning gear 26 and 38, go up bending shaft gear 25, bending shaft gear 39 down; The bending axle comprises bending axle 24, following bending axle 40; Servomotor 35 is installed on the servomotor holder 33 on the body 1; Be connected to final drive shaft 27 through shaft coupling 34 and drive mainshaft gear 28 and 37 up and down; Mainshaft gear 28 and 37 drives through last lower transmissioning gear 26 and 38 respectively and goes up bending shaft gear 25, following bending shaft gear 39 up and down; Thereby bending axle 24, bending axle 40 rotations down in the drive, bending internal mold 30 is installed on the body 1, and is as shown in Figure 4; Bending internal mold 30 is with a slotted eye 301 to supply steel edge material 45 to pass; Bending external mold 31 is installed on down on the bending axle 40 by bending external mold elevating mechanism and drives to being close to bending internal mold 30 just or the back side, and last bending axle 24 is provided with the interface holes 241 that matches with bending external mold 31 to rotate with following bending axle 40 drive bending synchronously external molds 31, and bending external mold elevating mechanism comprises cylinder 41; Be connected to bending external mold 31 by cylinder 41 through connector 44 and drive its oscilaltions and make it be connected, separate, be illustrated in figure 5 as bending external mold 31 and rise to sketch map behind the station with last bending axle 24.
Fig. 6 be the specific embodiment of the invention from the front bending-like attitude sketch map, when carrying out bending, steel edge material 45 is seen off through cutter material track 29 by tape-feed and is entered into bending internal mold 30 slotted eyes 301; Cylinder 41 rises to bending external mold 31 with last bending axle 24 and is connected; And be close to bending internal mold 30, servomotor 35 drives and goes up bending axle 24, bending axle 40 rotations down then, and steel edge material 45 is pushed towards oppositely being bent into certain angle by bending external mold 31; Turn round again when reaching the angle that needs like this and stop; Cylinder 41 makes 31 declines of bending external mold return again then, and the continuous intermittently feeding of feed mechanism combination servomotor 35 rotates and cylinder 41 moves up and down through controlling like this, and repetitive operation can make steel edge material 45 be folded into the setting shape; Equally; Like Fig. 7, rotate to steel edge material 45 back sides after can 31 declines of bending external mold being return, from another direction steel edge material 45 is bent.
The cut part comprises shears external mold 14, shearing internal mold 15 and cut part elevating mechanism, and shearing external mold 14, shearing internal mold 15 are driven by elevating mechanism, and shear axis comprises shear axis 20, down cut axle 43; The cut part elevating mechanism adopts stepper motor 3 to drive through screw body and shears external mold 14, shears internal mold 15 and is elevated to shear station and be connected with down cut axle 43 and separates; Stepper motor 3 is installed on the stepper motor holder 4 on the body 1, and stepper motor 3 drives synchronizing wheel 27 through synchronizing wheel 1, belt 6 and makes ball screw 8 rotations, goes up and down thereby drive feed screw nut 9; Thereby feed screw nut 9 connects shearing internal mold 15 through Connection Block 11 employing bolts 12 axial restraints to drive whole shear internal mold 15, shears external mold 14 up-downs; Like Fig. 8,9,10, shown in 11, shear internal mold 15 axial restraints, shear internal mold 15 and be with a slotted eye 151 to supply the steel edge material to pass; Shearing internal mold 15 overcoats shears external mold 14 and supports shearing external mold 14 by the shaft shoulder on the shearing internal mold 15; Shear axis comprises shear axis 20, down cut axle 43, shears external mold 14 and is connected with last shear axis 20 power through its outside spline, and down cut axle 43 is provided with and shears the interface holes 432 that external mold 14 matches and rotate to drive shearing external molds 14 synchronously with last shear axis 20; Also have simultaneously and hold the hole 433 of shearing internal mold 15; 43 are respectively equipped with shear axis gear 201, down cut shaft gear 431 on last shear axis 20, the down cut axle, last shear axis gear 201, down cut shaft gear 431 respectively with last bending shaft gear 25, down 39 engagements of bending shaft gear by its power that transmits servomotor 35 with drive shear axis 20, down cut axle 43 rotates, the steel edge material 45 after the bending is delivered to shearing place by feed mechanism; Through 5 rotations of control step motor; Drive to shear internal mold 15, shear external mold 14 and descend through screw body, drop to and stop after down cut axle 43 is connected, servomotor 35 drives upward through gear drive that shear axis 20, down cut axle 43 rotate synchronously; Shown in figure 12; Make and shear external mold 14 and rotate to shearing inclination and shear disconnected steel edge material 45 backs and reverse back formerly, accomplish a steel edge material 45 and process, shown in figure 13; Shearing internal mold 15, shearing external mold 14 are provided with the olecranon shear constitution; The olecranon shear constitution is for shearing internal mold 15, shear the curved or oblique angle transition in shaft shoulder place on the external mold 14, and shaft shoulder place etc. is higher than and shears the internal mold slotted eye topmost, like this when needs are sheared out olecranon; Descend to shear internal mold 15, shear external mold 14 and make the shaft shoulder etc. be higher than steel edge material 45 topmost; Then rotational shear external mold 14 is sheared, and steel edge material 45 parts of position, shaft shoulder place topmost can be configured as olecranon by the shaft shoulder, and is shown in figure 14 for shearing forward and backward olecranon 451,452 sketch mapes of coming out.