CN100460101C

CN100460101C - Coupler yoke bending forming method and apparatus thereof

Info

Publication number: CN100460101C
Application number: CNB2006101615850A
Authority: CN
Inventors: 曾德文
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-28
Filing date: 2006-12-28
Publication date: 2009-02-11
Anticipated expiration: 2026-12-28
Also published as: CN1994608A

Abstract

The invention relates to a method for shaping yoke frame, and relative device, wherein said method comprises that: putting the frame blank on the bend former; using compressor to drive the convex mould to compress the blank, to bend it and enter into the concave part of frame to contact the concave mould; controlling the compressor to flatten the frame plate, to contact it with concave mould; at least, releasing the compression, and removing mould. The inventive device comprises that: the former machine is on the workbench of compressor; the concave mould is at the concave bottom of former machine; the convex mould is connected to the compressing head; two sides of concave upper part of former machine have parallel movable compressing rollers, while another two sides have two couples of movable rolling wheels. The invention can improve producing efficiency and reduce cost.

Description

The bending and molding method and the device of hook tail frame

Technical field

The present invention relates to a kind of forming method and device of forging hook tail frame parts, relate in particular to a kind of bending and molding method and device of hook tail frame.

Background technology

Hook tail frame is the strength member that a kind of railway freight-car is used, and is U type mount structure.Existing hook tail frame is the turnover panel moulding manufacture method, normally at high temperature, the part in the middle of the secured blank at first, again by special forcing press from two curved plates, make it become the U type, to be formed after, carry out shaping again.Thisly form several shortcomings, it at first is the distortion (being two straight portion mutual dislocation of U type) that this forming method is difficult to avoid steel plate, the straight portion of U type also can bend or warpage, thereby need carry out further shaping, it is longer to expend time in, usually the shaping process need reheats, thereby production cost increases greatly; On the other hand, need special corresponding forcing press with this method and device, and this also can increase the production cost of hook tail frame greatly.

Summary of the invention

But the invention provides a kind of bending and molding method and device of hook tail frame of one-step shaping, this method and device are simple, cost is low.

The present invention adopts following technical scheme:

A kind of hook tail frame bending and molding method, may further comprise the steps, with hook tail frame blank (certain waste heat is arranged) or the hook tail frame blank that has just forged through heating, be placed on the bender, drive punch with forcing press and stress on hook tail frame blank, make hook tail frame blank crooked and enter the recess of forming frame body, be close to until hook tail frame blank and die, simultaneously, make the framework plate that is arranged at least three pairs of pressure roller compacting hook tail frame blanks on the make-up machine support body make the framework plate straight by the controlled pressure machine, thereby make the framework plate be close to punch, make axially and the limit of pressure roller shaft by the controlled pressure machine, the framework plate on both sides is not distorted, at last to vertical running roller compacting hook tail circle body plate, remove press pressure, the demoulding.

A kind of hook tail frame brake forming device, comprise forcing press 1, make-up machine support body 2, punch 31 and die, make-up machine support body 2 is placed on the workbench 11 of forcing press, die is arranged on the bottom of make-up machine support body 2 recesses, punch 31 is connected with the pressure head 12 of forcing press 1, but parallelly in both sides, make-up machine support body 2 recess top be provided with at least 3 pairs of

dynamic pressure rollers

41,42 that are used to make hook tail circle body plate and punch to fit, the also parallel movable running roller 6 of two couples that is provided with the framework plate side direction distortion that is used to prevent hook tail frame 5 in the other both sides, top of make-up machine support body 2 recesses.

For making pressure roller and hook tail frame better fit, thereby make that hook tail circle body plate is straight, strengthen the roll-in effect, but dynamic pressure roller is provided with 3 pairs.But thereby dynamic pressure roller drives pressure roller applying hook tail frame by hydraulic control.

The movable running roller that prevents the distortion of hook tail frame 5 side direction has increased the restriction to the distortion of hook tail circle body plate side direction for the swing running roller, and has simplified the structure of device, has increased the reliability and the durability of device simultaneously.

The present invention obtains following technique effect:

1. the present invention obtains the basic configuration of hook tail frame by design hook tail frame make-up machine support body and die shape, and combine with the pressure roller of hydraulic control and the running roller of hydraulic control, because the pressure roller of hydraulic control and the effect of running roller, make that on the one hand framework obtains the basic configuration of hook tail frame, but the dynamic pressure roller of hydraulic control and movable running roller can be regulated in process at any time on the other hand, revise the distortion of framework plate in BENDING PROCESS, make the manufacturing and one step of shaping of hook tail frame finish, thereby need not to carry out again shaping, improved production efficiency, simultaneously saved energy consumption heat time heating time, reduced production cost widely because of having reduced workpiece.

2. the present invention adopts protruding, negative mold and the die cavity with hook tail frame bend profile, can use widely on the normal pressure machine, make protruding, negative mold relative motion, the bending of hook tail frame blank is inserted the space of punch and die and make-up machine support body, and moulding hook tail frame, need the moulding of former turnover panel special forcing press come moulding and need not to resemble, thereby cost has obtained further reduction.

3. but the present invention is simultaneously by being provided with the hydraulic control dynamic pressure roller in die cavity, reduced the frictional force of framework plate motion on the one hand, but the dynamic pressure roller by hydraulic control pushes framework plate side on the other hand, make the framework plate be close to convex mould surface, thereby make that the dimensional discrepancy of hook tail frame and design is little, make part according to the profile moulding of setting, improved the accuracy of manufacture of part, the present invention is also by being provided with the movable running roller of hydraulic control in die cavity, reduce the frictional force in the framework plate running on the one hand, define the mutual changing of the relative positions between framework plate two flat faces on the other hand, distortion; This shows, but dynamic pressure roller and running roller by hydraulic control can be realized the bending on the hook tail circle body plate both direction and the small control of torsional deformation, thereby improve the one-time formed accuracy of manufacture.

Description of drawings

Fig. 1 is that the structure master of the embodiment of the invention 2 looks cutaway view.

Fig. 2 is the structure vertical view cutaway drawing of the embodiment of the invention 2.

Fig. 3 is the structure left view of the embodiment of the invention 2.

The specific embodiment

Embodiment 1

Embodiment 2

A kind of hook tail frame brake forming device, comprise forcing press 1, make-up machine support body 2, punch 31 and die, make-up machine support body 2 is placed on the workbench 11 of forcing press, die is arranged on the bottom of make-up machine support body 2 recesses, punch 31 is connected with the pressure head 12 of forcing press 1, but parallelly in make-up machine support body 2 recess both sides be provided with at least 3 pairs of

dynamic pressure rollers

41,42 that are used to make hook tail circle body plate and punch to fit, the also parallel movable running roller 6 of two couples that is provided with the framework plate side direction distortion that is used to prevent hook tail frame 5 in the other both sides of make-up machine support body 2 recesses.

For making pressure roller and hook tail frame better fit, strengthen the roll-in effect, but dynamic pressure roller is provided with 3 pairs, also can have 4 pairs, 5 pairs, 6 pairs, punch is positioned at the make-up machine recess, hook tail frame blank is positioned at its outside, but dynamic pressure roller, but thereby dynamic pressure roller drives pressure roller applying hook tail frame by hydraulic control.The moving direction of hydraulic control is unidirectional moving, and has simplified hydraulic control device, and in forming process, the less power of mold-relieving type makes pressure roller reply.The movable running roller that prevents the distortion of hook tail frame 5 side direction is the swing running roller, has simplified the structure of device.

When moulding, hook tail frame blank is positioned on the make-up machine, the opening pressure machine, make punch descend and contact with the centre of hook tail frame blank, increase the pressure of forcing press, make punch move downward and enter make-up machine, when but punch top, horizontal position is lower than dynamic pressure roller and movable running roller, but unlatching is used to control the hydraulic press of dynamic pressure roller, make hook tail circle body plate be fitted on the punch and the framework plate of avoiding entering make-up machine bends again, unlatching simultaneously is used to prevent the movable running roller of hook tail circle body plate in the relative distortion of another one direction side direction, and this running roller can be the swing running roller, and its rotating shaft is fixing thereunder; When punch Drive frame plate is fitted itself and die, hook tail frame moulding fully this moment, but shed the dynamic pressure roller and the movable hydraulic press pressure of running roller again, make the punch counter motion again, leave make-up machine, again with the hook tail frame of anchor clamps after removal from the punch with moulding.Wherein, the interior profile phase of the outline of punch and structure tail frame is same, and the interior profile of die is identical with the outline of structure tail frame sweep (sweep of U-shaped).

Claims

1. hook tail frame bending and molding method, it is characterized in that may further comprise the steps, the good hook tail frame blank or the hook tail frame blank of firm forging that will have waste heat through heating, be placed on the bender, drive punch (31) with forcing press (1) and stress on hook tail frame blank, make hook tail frame blank crooked and enter the recess of forming frame body (2), be close to until hook tail frame blank and die, simultaneously, but the hydraulic press that is used to control dynamic pressure roller by control makes the framework plate that is arranged at least three pairs of pressure rollers compacting hook tail frame blanks on the make-up machine support body (2) make the framework plate straight, thereby make the framework plate be close to punch, the hydraulic press that is used to control movable running roller by control makes axially and the limit of pressure roller shaft to vertical running roller compacting hook tail circle body plate, the framework plate on both sides is not distorted, at last, remove press pressure, the demoulding.

2. one kind is used to implement the described hook tail of claim 1 frame brake forming device, it is characterized in that, comprise forcing press (1), make-up machine support body (2), punch (31) and die, make-up machine support body (2) is placed on the workbench (11) of forcing press, die is arranged on the bottom of make-up machine support body (2) recess, punch (31) is connected with the pressure head (12) of forcing press (1), at make-up machine support body (2) but the both sides, top of recess are parallel is provided with at least 3 pairs of dynamic pressure rollers (41 that are used to make hook tail circle body plate and punch to fit, 42), the also parallel movable running roller of two couples (6) that is provided with the framework plate side direction distortion that is used to prevent hook tail frame (5) in the other both sides on make-up machine support body (2) recess top.

3. hook tail frame brake forming device according to claim 2 is characterized in that, at make-up machine support body (2) but the recess both sides are parallel is provided with 3 pairs of dynamic pressure rollers that are used to make hook tail circle body plate and punch to fit.

4. hook tail frame brake forming device according to claim 2 it is characterized in that, but dynamic pressure roller is by hydraulic control.

5. hook tail frame brake forming device according to claim 2 is characterized in that, movable running roller is the swing running roller.